Car ac blower keeps turning on and off

Car ac blower keeps turning on and off

car ac blower keeps turning on and off The motor can also fail and cause a clicking noise. This is most common cause of short cycling. Had to pull fuse to keep from discharging battery. Then when power restored fan stays off. Blower continued to run. So if you 39 re low on refrigerant you have a leak that needs to be fixed. Looking at the Schematic for the blower I see 3 wires which plug into the regulator. The car lose power as if it goes into a lower gear then cannot go up a bridge or incline as if a plug have died Peugeot 407 Red warning light coming on engine temperature to high water ok smell petrol on oil dip stick I have a 2007 Chevy Monte Carlo and the A C wasn t blowing cold cold just ambient to cold air also when I stop at a red light or parked my car the A C would turn completely off. Both are new. Is your fan speed control a variable speed or does it have individual set speeds that can be selected for example Off 1 2 3 and so on Next turn off the AC. SOURCE Heater AC Problem 99 Escalade On the passengers side under the dash you will find the blower motor. sometime when I restart the system it only works for 5 minutes then the condensing unit shut down but the blower fan keeps running. The next time you make a call it will connect up as normal. Not to say you don 39 t still have a problem separate from that. As soon as I plug in the ground with truck off blower turns on sparks burning smell. The most common reason that your Air Conditioner fan won t turn off is because a stuck relay keeping the circuit closed. One of the most common AC problems our expert technicians at Michael Bonsby Heating amp Air Conditioning hear is My air conditioner keeps shutting off If you ve become frustrated by the way your air conditioner keeps shutting off you need to call us at 240 342 6910 for professional AC repair services . The slamming noise is likely the damper closing after the AC shuts off. Test to see if you have a faulty ignition switch turn OFF the ignition switch and test for power at the HTR A C fuse which supplies the power to the HVAC controller 39 s fan switch. Models 2003 2006 Chevrolet Avalanche Suburban Tahoe. Even if the temperature level being on cold makes the car jump and act up so i always have to keep the temperature level on red. When the heater is off it is fine. This pattern of functioning is called short cycling and it is a sign of trouble that you cannot afford to ignore. Therefore by turning off your air conditioning before turning off your vehicle the A C would not be on when you started your vehicle back up. Swapped out the resistor with another new one even though it looked fine. Why Does My Smart Thermostat Keep Turning the A C Off If you recently installed a smart thermostat and discovered that it randomly turns the air conditioning or heat off it probably isn t broken. Start the engine don 39 t touch any controls on the module for a minute as it recalibrates and you should be good to go assuming that was the correct fix for your problem. Start the car and the air conditioning light is always on. Blower motor runs on high while the car is running. hyundai forum at Car Dealer Forums Is it a quot design feature quot or a sign of trouble that occasionally when we start A defective blower fan engine cooling fans and relays can affect AC system operation and cooling performance. You can at least stick your head up under the glove box and find the main power connector for the blower and inspect it. The Front Blower Motor Relay also known as the AC Relay located behind the junction block with a black connector B05 is the culprit. The compressor was fully on and the car just was barely cooling before I began adding the freon into the car but it certainly was not keeping up and was not cool enough. Pulled the key from the ignition and all was quiet for about ten seconds and then the blower came on again by itself. Drove to a lot and pulled over and everything came back on. If you re dealing with a bad blower motor you re going to have a much more difficult time taking control over the temperature of your vehicle s The fan limit switch is responsible for turning the blower on and off at the appropriate times. Driving today in town with ac on auto. 2 if I turn off the car connect the a c compressor turn the car on the fans works loudly and noisy NOTE that even without turning the a c on this happens. Locate the blower motor inside your air handler. So my mechanic turned on my AC and when the blower didn 39 t blow he smacked Furnace Won t Turn Off Why Your Furnace Keeps Turning On and Off. You can then lift the ECU out of the way which will reveal the 219 fan control relay. This cycle is sometimes audible inside the car causing a clicking noise. Short cycling is bad for a few reasons It means you re wasting energy and driving up energy costs for your home. If you turn the quot service selector quot switch to off heat AC vent switch then the blower shuts off . It 39 s done it to me several times both when first getting in the car I haven 39 t moved yet and while doing 70 down the highway. This is with the blower switch on the off position and heater ac on off. It has gone a day without coming on thermo off the wall the entire time then just cycles itself on. Under certain conditions the air filter may get sucked up against the top of the duct box. When your furnace keeps running after the temperature has been reached. The AC button and the interior circulation button are both lit and I cant switch them off. On some models like mine there is a metal clip which bridges across the ECU itself. Begin by turning off the power to the furnace or blower. Hold these buttons down for about five to 10 seconds or until the LED lights on both buttons start flashing. g. During the summer a lot of homeowners want to know how to shave money off of their Florida electric bills. If it is doing so rapidly though it can indicate an improper charge such as being low on R If your outside AC unit is turning on and off and you haven t performed AC maintenance in a few years it s possible your AC s condenser coils are caked in dirt and debris. Pry off the fuse panel cover and find the blown fuse. I 39 m new to the group and 3 ownership. You certainly don t expect it to affect the way the car is running. On account of this a c blower motors and blower modules are frequently in need of replacement a stripping and carrying open heart surgery service that is being carried out on looms in order to save them. It could be a serious problem in the summer. Ideally the car 39 s AC should work like the AC at home. There is normally a shut off or disconnect panel on the wall next to the outdoor compressor. a c blower keeps blowing after turning off truck. Ok I have a 98 Town Car and the compressor turns on for 5 10 seconds then off. However it is susceptible to failure which will affect the luxury of driving a BMW. This is a weird issue I 39 m having with my AC. turned pump on and then vacuumed for 45 mins to rid the system of any moisture. CarComplaints. I have tried You can take your car to most lube techs to have the high amp low side pressures checked. At times it will come on as soon as I crank engine at times it will not come on at all. The board relays may be faulty if the compressor keeps running well The air conditioning turns off after a few seconds when switching to AC Max Mode. So I think it cools then when I adjust the setpoint up to get the AC to turn off the compressor turns off immediately but the fan continues to run. This means annually vacuuming out the blower compartment and changing the filter whenever it s dirty Photos 7 and 8 . AC Heat still seems to work fine just the fan can never be changed. Joined Oct 1 2012. the AC just won 39 t work. While troubleshooting I did not see any advice to also replace the blower however so I didn 39 t. 2. Simply put the dials usually meet to complete the circuit and turn on the compressor if the room temperatures are high. The fan limit switch is responsible for turning the blower on and off at the appropriate times. That s no good. nobox7. Can anyone tell me why not I would highly appreciate it thank y Pull ignition key blower remains off for 2 3 seconds then starts running at lowest speed. Car Overheats When AC Is On The Causes. Caution Keep in mind that you shouldn t run a single stage snow blower over gravel because it can pick up and throw the gravel with the snow possibly damaging windows or injuring passersby. You can take your car to most lube techs to have the high amp low side pressures checked. Car starts fine but now the AC blower won 39 t turn on at any setting. This could be a fan blade a cover plate or something as simple as a screw. Asked by Moeman20 in Yonkers NY on June 15 2010. I tried to locate the fuse for the AC but when I pull the fuse out 25 amp the AC and fan blower continues to run and the dash board One way to keep your compressor in tip top shape is by running your AC on full blast for 10 to 15 minutes once a month regardless of the ambient temperatures outside. Air conditioner short cyclingin seconds Watch out A quot short cycling quot air conditioner or heat pump compressor condenser unit that turns on and then back off after just a few seconds is in serious trouble. The AC system has a control board and a failing control board can cause the air conditioner to cut on and off in a repeated cycle. I have already replaced the blower controller resister to no affect. Dirty Air Filters. Any troubleshooting tip Thanks October 25 2017 I have a 2003 GMC Sierra and just today when I shut my vehicle off I noticed the heater was still moving air. Wait a few seconds. It keeps running even with key off or even completely out. When an air conditioning system loses its ability to cool properly it may be necessary to recharge the system with new refrigerant. Then the cold air hits the thermostat turning the AC back off. Ventilation fan is fried. I changed the front blower motor and the resistor. You will likely need to let your system rest for a full day before the ice thaws completely. 9 Mar 30 2017. Oct 16 2012 9 18am. Between the compressor the AC clutch and most commonly the refrigerant level there are several reasons why a car air conditioner can stop blowing cold air Refrigerant loss Low refrigerant coolant is the most common cause of AC problems and the solution is a Car AC Recharge plus repairs to any leaking AC components that may be One thing I hate about it can no longer remove the top radiator shroud to get at the radiator and condenser to clean off the bugs. In many systems the blower fan runs a minute or so before heating or cooling begins and ends to get air flowing. When it does come on usually after about 20 minutes of drive time it blows great. Does anyone else have this issue Related Why is my air conditioner frozen Important note If an air conditioning company determines this is the cause don 39 t let them simply 39 top off 39 your air conditioner with more refrigerant. The controls say the AC is on I can turn it up and down or off and If you turn on your air conditioning system and find that there is no air blowing out of the AC unit or no buzz of the blower fan motor then it is possible the AC blower motor has an issue. When your air conditioner won t work put on your DIY hat take a look at the system and try to figure out what s wrong. But sometimes furnaces will begin turning on and off too rapidly to be responding to temperature variations. 1 Low airflow. it 39 s just that what turn off and actually blows harder when you try to turn it off. AC Unit on and off again by Mary Robbie When AC unit has been off for a while and you turn it on it runs ok for a while until trailer is cooled then when it needs to come back on is when the problem starts of on again off again. Had to replace a relay Squealing ac fan motor. This will last maybe 2 minutes before I can reduce or turn off. You can also simply turn off the system and turn on the blower to help thaw the evaporator coils. Tips to keep car temperature in normal level without air conditioner Car aircon problem 2 Unable to turn on the A C If you have ever felt frustrated when your A C refuses to turn on and your temper is getting as hot as the air outside maybe you can find the reasons for this issue in the following list Turned truck off and within a few seconds heard sparks smelled smoke. Car AC compressor won t turn on The majority of compressors won t engage if the coolant level falls too low so an easy way to diagnose if this is the problem is to see if you can hear the compressor kicking on and off. didn 39 t think much about it until i turned off the ignition. Now looks like it might need a new A C and heater control since it kicks on the compressor when the knob is turned to defrost and it stops blowing hot air to the windshield. This is often the case. To do this you ll have to measure the ohms. 11 516 Posts. The blower would operate as expected when the vehicle was running it was just this odd behavior when the ignition was turned off. So problem fixed. However it is important to understand how your furnace actually works at a basic level before troubleshooting here is the 101 course. With the AC off keep the fans blasting to make sure a lot of air hits the evaporator and removes any mildew moisture or mold spores from taking root. Broken Cooling Fans We mentioned above that the condenser often has a pair of cooling fans in front that aid in the removal of heat from the liquid refrigerant. It works on manual if the blower is at 40 50 of max air quantity. The heater blower motor reduces or increases the amount of air blowing through the dashboard vents based on the fan speed selected or in an automatic climate control Turn off the A C unit and call in an HVAC technician to replace the capacitor as soon as possible. Because the cold air takes some time to get produced. Why Your Air Conditioner is Turning On and Off If your air conditioner is turning on and off frequently you re experiencing something called short cycling one of the most common air conditioning problems among homeowners. When It 39 s hot and you don 39 t want the fan speed to drop right after you make the call using the dial pad of your phone press the Bluetooth button to turn it off. Air conditioning systems are relatively quiet when in use. I tool the fuse out to stop it. Cause. It s just using a smart feature that frankly isn t very smart. 7. Rather than risk a dead battery i returned home and disconnected the negative battery terminal. The blower has 4 settings on 1 the air from the vents is very cold but there is not enough circulation to be useful so I would expect the compressor to cut off sometimes then. Refrigerant isn 39 t 39 used up 39 like gas in a car. I took it to Brake Masters and they said it was a bad condenser. So I have told you what my car is like. If you are not able to do this turn in the car to the nearest service center you can find. The ac heater blower motor goes on and off intermittently. Something higher up in the power chain is providing power when the ign. Push down on either end of it to release the clip. Press quot rest quot switch again fan stops then starts again at a lower speed. If your blower motor does shut off after a time I suspect that the afterblow feature may be enabled. And yes it will run down your battery anytime something electric keeps running with the engine off. Car Heater Not Blowing Hot Air A Bad Blower Fan Motor. I have a 2001 QX4 and I cannot get my blower motor or whatever to shut off When I press off on the climate control then it switches the flow of air to my windshield and feet. But if it gets clogged then you might have a problem. While the car is running the blower motor runs on high. The only way I can turn it off is by pulling the fuse for blower motor. If there is a problem in the air conditioning system such as a leak the compressor could turn on then off then on then back off again. Bad blower motor What to do Turn off the AC. Check the windings. What Causes the Fuses to Keep Blowing A number of things can lead to a fuse keeps blowing in a car and all have to be checked and repaired to avoid spending more on the fuses. of freon and a new A C actuator. I am having this problem with my blower fan. Increasing the air quantity above that level turns off both the compressor and blower. The AC will continue to run as you can feel cool air coming out of the vents but after 20 seconds it with then cut out completely then seconds later turn back on. Ironically the very thing that makes an air conditioning system convenient easy to use and reliable is the thing that most often causes intermittent problems electronics. It pressurizes the A C system and keeps the refrigerant flowing so that everything works properly. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. Thus long cycle time promotes humidity removal capability of an air conditioner. Keep both buttons depressed until one of the lights blink a few times then you get a solid green light once the change has been made. com Car complaints car problems and defect information My TRANE XE 90 blower fan has a mind of its own. I assume you mean the heater ac blower inside the cabin If you can 39 t get it to stop better leave the battery unhooked when not driving the car a motor will drain the This next tutorial is going to be showing you how to take care of a problem that is very common amongst drivers. If it does the problem is not likely the thermostat. If you suspect a refrigerant leak take your car to General Automotive. 2000 BUICK CENTURY HEATER FAN STUCK ON HIGH SPEED. The display stays on and works normally. If the blower motor turns on and stays on the moment your ignition key moves to on then I suspect a bad motor control unit. The blower motor keeps running. An air conditioner with frequent on off cycles cannot remove humidity from the room. You may also be hearing loud creaking noises from the ducts expanding and contracting from pressure and temperature changes if you have sheet metal ducts. Turn the thermostat up to a temperature at or near the outside temperature. Annoying but definitely not a show stopper. 1999 Cadillac Seville. Several conditions cause short cycling including a faulty or obstructed thermostat leaking refrigerant icy coils or an HVAC system that is too big for the building in The AC Blower Module keeps shorting out e. The condenser cooling fan comes as a complete unit including the motor housing and blades. This will disconnect your phone from your car for this one call only. Well mine don t. Wait to see if the air conditioning unit fan eventually shuts off. Note this is a way to prevent further growth. Those used to be installed only on vehicles with automatic climate control with variable speed fans but now they re installed on many late model vehicles. This is to check if they re spinning freely or if maybe there s a fallen branch or something else that may be restricting movement. The air conditioning is running in the cabin as if the car is still on. The blower will not turn off. When I turn on the ac the fan works and keeps the car cool. Today on my way to work although speed 3 was selected it would only blow on speed 5. The last time it happened it took me 3 trys but make sure you look at the battery gage on the dash. If your air conditioner turns on and off at intervals of less than ten minutes it is probably short cycling and also deserves a service call. A C system can be turned off and on multiple times but the front blower fails to respond. Also shut off the air conditioner s 240 volt circuit at the main electrical panel. Seals. There could also be a problem with the fan or air handler that s causing the blower wheel to bang against another Hard to breathe right That 39 s what a dirty filter does to your AC blower the blower has to to work longer and harder to circulate air through the filter. Over the last ten years more and more features have been added that make automotive air conditioning and heating systems more complex. Press quot rest quot switch button lights fan runs at higher speed. Heating and Air Conditioning. Sometimes is sounds like the compressor tries to come on and cannot and then clicks off. So far have had the If that doesn 39 t fix the problem move forward to Step 2. Pull it off clean it with some electronics cleaner look for obvious damage and make sure it connects tightly. VOLVO V70 December 14 2019 2 00pm 6 Rex this person asked their question 9 years ago so I doubt if they even have the vehicle any more. You park your car turn off the ignition and start walking away. Keep the fans on high as the car shuts down. Then the problem started the blower stopped working and no ac. Adjusting the temperature on the thermostat and selecting cool or heat does result in the AC and furnace turning on respectively so at least that much of the thermostat is working. I can use the blower motor switch and put it to low med high and everything works fine but again the blower motor is running on low speed as soon as I turn key to the on position. Check to see whether it s your blower motor or the whole furnace system that s running non stop. Put the key in and turned on the power and the fan went off. Your HVAC system has a drain pan or drain line. Hello Guys I have a problem with an 88 Cadillac Deville. switch on the AC. To turn the blower fan off simply set your thermostat to the auto option. If your outside condensing unit keeps losing power and tripping the circuit it is one of the symptoms of bad ac compressor. The climate control unit will turn on but you cannot feel the air because the blower will not blow. com It turns on and off randomly when I 39 m driving. Keep reading for a R 134a A C pressure chart and steps on how to recharge the A C system when the system is low on pressure or has been vacuumed out following a repair. Problem Car AC Makes Noise When Turned On . If it s covered with dirt you can try to clean it by wiping it with an old rag or toothbrush. Do this by turning your air conditioner off at the electrical breaker. So when the switch is working correctly your furnace fan should turn on several minutes after thermostat calls for heat and turn off several minutes after the heat cycle ends. Started car drove to work and shut the car off. Then walk back outside and insert a screwdriver or similar tool into the slits on top of the condenser unit and try to move the fan blades with your tool. Turn the air conditioning controls to MAX AC and start the engine. This can typically be fixed by turning off the air conditioning unit and letting the ice melt then checking the air filters cleaning or replacing dirty ones. One thing I hate about it can no longer remove the top radiator shroud to get at the radiator and condenser to clean off the bugs. Step 2 Check the switch selector. Remove and replace it with a new thermostat. let the blower motor run for 2 3 minutes without the AC. After paying 800 my car STILL has the exact SAME problem. The battery must have 12 volts minimum and outside temperatures must be 21 C 70 F for higher. The capacitor may also be used to keep the fan motor running properly as well as starting it. The ACC has a very common fault the resister fan controller fails and the blower will run full blast and then not at all. Diagnoses 1 if I turn off the car disconnect the a c compressor unplug the electrical connector turn the car on the fans works as they should be. This causes the blower to draw more electricity and trip the breaker. The AC Heater blower fan will not turn off. When you experience this problem it can get annoying. Why does the blower motor keep running after I turn off the car If your car uses a blower motor controller it can keep running the blower motor after you shut down the engine. Has anyone else seen this problem Wonder if it is an easy fix. The low side was below 15 psi. Joined Oct 15 2006. So if the blower turns on after about 40 60 minutes of driving and turning off the car it s the car drying the evaporator doesn t that it doesn t get musty from being damp. If it s not the relay your thermostat likely has a shorted cable or needs to be replaced. I bypassed the AC Clutch relay and the AC turned on. As you get in your car and turn on your AC you probably expect it to be blowing hot air for the first minute or two until the system cycles through enough to cool it. This next tutorial is going to be showing you how to take care of a problem that is very common amongst drivers. For a while now the blower fan on my car only worked on speeds 3 to 5. If your air conditioner turns off on its own don 39 t panic. Very softly. Both the pulley and the clutch should be spinning. 6l AC did not work. Luckily this is a relatively simple fix just find a better location for your thermostat. set the temperature at desired settings. Unplugged and grounded directly to frame same thing happened. 2001 duramax 2wd Project truck You can take your car to most lube techs to have the high amp low side pressures checked. once in a while it wont turn on UNLESS i turn it to have the mode blow on my FEET ONLY then it will blow in all modes with A C on or off recirculate air or let outside air in. The blower motor will be activated at medium speed 45 minutes after the ignition has been turned off. Now it doesn 39 t come on at all the blower and ac. The home air conditioner uses the air inside the room cools and dehumidifies the air and pushes the cooled air back into the room. After about 5 minutes it will start all over again. switch OFF the AC switch. A sensor monitors the air temperature in the room and signals the control board to turn on the compressor and begin cooling. this is the blower located just behind the dash board propels air for AC. Page 1 of 2 1 2 Next gt I 39 m having a similar issue where the blower still runs after turning the car off. Turn the air conditioning on while the car is running. When I press auto or something or change the position of where I want it to blow it changes it but I cannot get it to shut off completely. I thought it was possessed and then the car stalled and had almost no power at all and evenuqtlly less than a minute zero volts. Having your car s air conditioning go out suddenly can ruin your day fast. The restoration to normal temperature is pretty quick to once you turn off the AC. If your air conditioner will not shut off and keeps blowing cold air it may be due to an issue with the control board also known as the PCB assembly. We will test the pressure and use special dyes to pinpoint the leak. Turned the car off and everything came back and has worked fine so far. Will not cycle off unless I remove power to the entire HVAC unit. Its possible that previous owner complained of musty smell from the AC. If the heater isn 39 t blowing any air skip to the next section. On my c240 mercedes year 2000 the blower motor won 39 t stop running after the car is turned off. The air conditioner is not cold because of that. Honda Accord Why Does My Fan Keep Running After the Car is Turned Off In some cases the cooling fan under your hood stays on for a prolonged period of time causing your battery to die. With the fan blade spinning in the wrong direction the motor will not load and it will burn up over time. The compressor for the air conditioning gets it s drive from the engine and hence it will only work when the engine is running. The dealer had to replace a relay in the signal stalk. Turning the AC off on with the power button does nothing. Some cars have a shut off feature that will disengage your car air conditioner compressor if your engine is under duress. Discern a duct malfunction. . After using the air conditioning and the weather conditions are right the blower will automatically turn on and blow until the AC evaporator canister is dry but it waits until you are done driving and have turned the car off for a while. correct way to switch OFF the AC unit is like this gt . When there 39 s a problem with the compressor clutch your air conditioner won 39 t blow cool air for long. If you leave the unit running the fan motor will keep attempting and failing to start. Blower Fan also known as the indoor fan motor the blower fan motor is located in the furnace or air handler typically in an attic indoor closet garage crawl space or basement . The blower fan located behind the dashboard pushes air through the climate control vents. It cycles on and off and usually shuts off after a period of time but has run the battery dead. Just blower no heat or AC. A sensor is doing its job to protect you from a potentially hazardous situation. Turning the blower off and back on fixes it for another few minutes. There are a couple of important tips to keep in mind when dealing with circuit breakers Circuit breakers can look ON even when they are tripped. The blower motor relay controls the current used to power the blower motor and is subject to the constant on and off switching. You also may be a little frustrated because you are not getting cool and you are wasting a lot of energy. If the vehicle is stopped turned off and restarted immediately the Front Blower begins working again just like normal. Then look at the front of the compressor clutch. Maybe you mean your fans never turn off. It is natural for your car A C compressor to cycle on and off. By air conditioning I mean the cabin air conditioning. You should be able to get one from the You can take your car to most lube techs to have the high amp low side pressures checked. You might have to remove a panel. Needless to say keep the AC switched off while driving to the service 7. This is relatively common problem of the the full sized Chevrolet GMC and Cadillac trucks with auto a c controls. However if you park the car for several minutes or turn off the ac for a given time and turn ac back on it works fine for short period again. This is not normal behavior and the problem is unlikely to clear up on its own. Even the engine control module ECM can keep the AC from turning on if The electronics in the car went crazy wipers came on warning lights on the car came on AC stopped blower etc radio you name it. Second this time 11 12 08 they could not duplicate the problem. But then if we switch things around or turn it off for a bit and turn it back on we finally get the air flow back out of the vents. I been having problems with my car 39 s air conditioning. 2009 Toyota Corolla Manual HVAC. The 2012 Ford Fusion has 4 problems reported for ac heater shut off randomly. Starter engine and turn climate control off. Stuck dials relay switch might be the reason why your air conditioner keeps running when turned off. Please help anybody If you have a direct drive blower fan you ll want to skip to the section on blower fan motor bearings. Disconnected battery and problem solved AC drain Then 8 to 9 month 39 s later when I try to use the a. Then you notice the engine cooling fan is still running even though the car is turned off. Joined Mar 24 2010. When I hit the off button the floor blower blows harder. Signs That Your Car s Blower Motor Is Going Bad May 30 2019 2 41 pm Published by Writer Leave your thoughts. Below we will troubleshoot the various causes for a furnace that keeps turning on and off every few seconds. And as suddenly as the blower shuts off 30 seconds to a minute later it starts back up on its own. The symptoms of the car overheating due to the air conditioner involve the heating up of the engine dashboard and the seats a few minutes after turning on the AC. Turn on the car turn off the AC open the hood and listen closely. Over time the AC cycles the air and turns it into a cool one. Most smart thermostats come with a feature that can automatically turn Once again the symptoms are that the blower keeps going all the time even with the engine off and the key completely our of the vehicle. Anyonw know what would cause this 08 duramax ccsb efi live air dog 2 isspros 5 inch exhaust and some other cool things. Your vehicle s blower motor is a crucial part of its heating and cooling systems. The system seems to be running regularly heat upper and lower vents etc. Before that time the climate controls can not be turned off nor the fan speed reduced. The battery is only 2 years old and is a good quality 5 year battery. I tried pulling fuse for climate control but it did not turn off fan or reset anything. Turn off your air conditioner to reduce the risk of damage and schedule an appointment with a technician. Here are some things to keep in mind when you are experiencing a problem of car air conditioner blowing hot air. The controller is mounted behind the glove box I replaced mine in about 15min you can get them online for around 100. The best setting for diagnosis is fresh air not recirculated with the air blowing out of the center vents in the dash and the AC turned on. This is one of the most common and easy ways to know if your air conditioner blower motor is broken or not. Depending on the year make and model you may find this component both in the interior cabin area or outside in the engine compartment side of the firewall. Why does my car AC compressor keep turning on and off Short cycling when the compressor constantly shuts on and off is one of the most common air conditioning problems. Turned truck off and within a few seconds heard sparks smelled smoke. RV Air Conditioner Fan Turns on and off Repeatedly. Re A C compressor turns on and off. I know this thread is a year old but I thought it was normal for radiator AC fan to run occasionally after car turned off. This article will discuss a few reasons why your fan stays on after you turn your car off and how to repair it. Rattling Noise. If there is a problem there you may have a leak. My best guess would be that the blower motor may have bad bearings or other issues causing it to draw too much current causing the overcurrent protection on the motor to kick in and shut the motor off. If that doesn 39 t fix the problem move forward to Step 2. 2003 2007 Chevrolet Silverado. 1 Turn off the power to the AC unit. You then hear a hum coming from under the dash. The first thing you ll want to do is check the blower motor. There is no control from the A read more. Here are the details about it amp signs of its failure and ways you can fix the blower motor resistor. OFF. 5 4. When the ac is of the radiator hoses both become same heat after a while and the overflow reservoir starts boiling over and the fan do not kick in. Put vent location to quot face quot . I have a 2007 Huyndia Tuson. When I raise the setpoint to get the AC to turn off I notice the register temp slowly goes up to 61 before it turns the airflow off. There are evaporator coils inside the air conditioning system. Turning AC On and Off vs Leaving It On. 5. In fact the air conditioning works great it just won 39 t turn off when the engine is turned off The 2012 Ford Fusion has 4 problems reported for ac heater shut off randomly. This is usually accompanied by a complete system shutdown. This is a common but important question we get all the time Is it better to turn the AC off when you leave Or is it more efficient to leave it on all day Joined Aug 22 2012. KIA SORENTO I JC ac heater cabin blower issues Hi all So my wifes 2003 kia sorento is the subject car and she tried to turn on the ac on and it did not work. Check this area out and if it is melted you need to replace the resistor and the connector. It will likely not help remove the actual smell if it is already there. It is probably a blown fuse if the temperature controls on the dashboard seem to work correctly but have no effect on the air. Before calling your service technician out to start replacing components check the thermostat settings first. 24 Posts. 2 Apr 16 2012. Air conditioner is turned off but fan keeps running If your blower fan is continuing to run after the system has already turned off and you made sure your thermostat isn t set to the on position then you ll want to try and pinpoint the issue. I have a 2006 Mazda 3 hatchback 2. I replaced the blower motor resistor but that did not resolve the issue. However just opening and closing the door immediately quot turns it off quot . They always mount the interior fan near the evaporator and heater cores. Without it the AC system will not be able to circulate any heated or cooled air. Next check the windings of the fan motor for an open or a short. added freon till the low pressure ran 40 50 and high pressure 175 180 80 F. Short cycling 3 common causes. There was cold air blowing from the rear motor blower but the front blower motor still was not turning on. Furnaces are calibrated to turn on and off based strictly on changes in indoor air temperature. Lessening the load put on the carburetor even just a little bit made a big difference in terms of emissions when turning on the engine. Blower motor won t shut off Blower motor keeps running after car is shut off. No not those seals down by the pier. A furnace and or AC that won 39 t turn on usually has a power supply issue or a tripped limit switch. spoiler is down mirrors folded in all lights off the AC fan should turn itself off after a few seconds and stay off. I know the final stage resistor caused it to stay on even when my car was off in my last 3 series does anyone know if the final stage resistor is the culprit here Got home and began to slowly put the R 134a into the car air conditioner system with the AC turned on and the temperature set fully to cold and the blower fully on. At first I thought this might be normal and it would shut off after a slight delay. If the key fob is anywhere near the vehicle then it 39 s possible that the fob is triggering the AC fan depending on various car settings . If the system has been opened for more than a few hours from an accident damage or Ideally the car 39 s AC should work like the AC at home. Rear Blower follows commanded speeds. Car 2009 Audi A4 B8 Avant 2. See full list on doityourself. Improper rotation of the fan blade. Step 1. First time they thought it was a loose connection to the blower motor. If you notice your car AC lines freezing up you have to get rid of the moisture that s causing it starting with a full leak check. 2 Dirty outside unit Your AC system has an inside unit and an outside unit. Description of Problem. The blower motor high speed relay is included on these components and no longer a separate component so when it shorts the blower motor stays on even with ignition to OFF since one side of the relay coil is hot at all times or tied directly to the battery supply and not via the ignition switch. But what if the car ac doesn t blow cold air at all What if it keeps blowing hot air all the time Yeah that s our problem. All the normal AC lights come on on the dash and I can hear the engine revs changing when the compressor kicks in but no air comes from the vents at any of the 4 fan settings. I have gone out to my car on my 45 min lunch break several other times and used the radio and the AC blower fans to move the air in the car and have not had any issues with a dead weak battery. If you have a belt driven blower fan a loose belt can cause squeaking noises. 5 Posts. Any ideas A lack of airflow caused by an obstruction in the air conditioner or a blower fan motor failure is a common cause of ice buildup on the coils in the following ways A completely clogged air filter can block incoming air from reaching the evaporator coil while leaves and yard debris can do the same for the condenser coil. It will not turn off. The ac was blowing well on all air speeds. May 26 2015 The blower motor resistor module has the blower relay built into it and it could stick as it does have power to it all the time from the FRT HVAC fuse. When you use your A C condensation builds up as well and this usually goes down a drain. 2 Sep 3 2016. Is it just the blower that is intermittent or is the AC compressor engaging also intermittent 2. It could be faulty. The common issue with fuses blowing would be because of faulty wiring. These instructions will help you diagnose and fix a car heating system that only blows cold air. I had a long talk with the service manager and he said they had to duplicate the problem in order to try to fix it. However once I pushed the power button on the heater the blower still continued to run. The defrost button has three lines going through it while the recirculated air button has a picture of a car with a curved line through it. The blower motor resistor or blower module gets hot as it powers the fan so often times they can burn out causing certain speeds of the fan in your car to stop working the fan can be stuck on one speed only work on high speed or not work on any settings. I have a 39 91 Sedan Deville. 6. Then when the AC turns off the filter drops to the grille making a slamming or thumping noise. A rattling noise may mean that something has come loose inside the air conditioner and is blowing about the unit. It is constantly re used. They stepped me through diagnostics. 10 Posts. Then the ambient surrounding heat around the thermostat warms it up causing the AC to turn back on. If the heater isn 39 t blowing hot air at you when you turn the system on the blower fan might have a problem. Auto A C front blower shuts off on High setting all other speed good Discussion in 39 3rd Gen 2007 2017 39 started by Space Monkey Jul 7 2017 . The blower will never come back on unless you turn off the AC completely and wait a few minutes. When the RV air conditioner turns on and off repeatedly during nights or humid days freezing evaporator coils are likely to be the culprit. Electrical Load shouldn 39 t be immediately applied to any automobile when turning it amp 039 s engine on. Took about 10oz. as well as a white wire a black wire and two brown wires. 2004 Chrysler Pacifica Heater blower will not shut off. Idle the engine for a couple of minutes and then finally turn off the engine. So make sure that you turn it all the way off then back on again. Just to clarify fan does turn off when the car is shut off. See if the problem is as simple as a blown fuse. Cost to Repair 45. The blower motor resistor plays an important part in the luxury provided by BMW as it is intricately related to the functioning of the AC system. Either it 39 s not getting electrical power or more likely the motor itself has simply You can take your car to most lube techs to have the high amp low side pressures checked. If your fan belt isn t tight enough it can also slip off its pulley track and cause the fan to stop working properly. You cannot turn on the air conditioning without the engine running. Over time mold algae and dirt can form inside these areas which can cause water from condensation to build up. I checked it and the ac compressor is turning on and the heater turns on the issues is that the blower into the cabin will not turn on. Warm Air is Coming Out Instead of Cold. The high low control nob does not change the speed of blower. 2002 CLK430. With bugs blocking air flow high side of the AC system gets super high with pressures that causes wear and tear on the compressor plus reduces cooling. Some customers may comment that the blower motor is inoperative or continues to run after the vehicle has been shut off. 4 when I turn the car off the blower motor stays on indefinitely this is not the 16 minute delayed cool down fan and the ac does not work and the climate control panel is black. We turn the air on and we can hear the fan blowing but at times nothing comes out of the vent. 3. This usually happens with the blower hose that supplies air to the blower unit. Anytime your car makes a noise that wasn t there before could be a sign of trouble. Check your air conditioner. I am still able to change the direction of the air Vent Heater Defrost but it is stuck on speed five. There are four main reasons for your RV AC fan to turn on and off repeatedly When your air conditioner turns on these ducts suck in air from your home. When the blower control unit goes bad the blower will stay on indefinitely or stay off indefinitely. My AC works but time after time the blower will shut off just as the car is starting to cool. The air conditioner won t run properly unless your engine is running. As Jimmy said it will keep bacteria and such from growing in the canister. Circuit Breaker Tripping. 4. The gage needle should be all the way to the left showing there is no current. If you don 39 t change your air filters often enough the filters will become dirty and clogged which means the heat exchanger retains heat and eventually causes it to overheat. Just replaced the blower regulator with new. In normal operation when your thermostat is set to quot auto quot it will tell the blower fan plus the heating or cooling components to turn on and off at the same time when the desired temperature is reached. blower speeded up on its own. When you turn on your car s air conditioning AC you just expect the cool air to flow smoothly and quietly. Prior to pulling the fuse I tried to tap on the relays on firewall under 2 fuse housings but did not get lucky with that. One of the common signs of overheating is a burning smell coming from the vents. Try and sort out any issue from the above pointers that can be fixed right away. July 15 2018 Cooling. If water has ever spilled on you from inside your car it 39 s probably from your HVAC. If the car is running or the key in the accessory position warning lights on but engine not running and the blower switch is in the off position the blower fan will stop. When you turn off the ac the ice on the evaporator coil melts and afterwards air can make contact with the coil to cool it once again. Troubleshooting a car 39 s air conditioner is an important part of knowing your car and can be a real life saver in the summer heat. To reprogram the HVAC module remove fuse for a minute or so or disconnect the battery. This is usually the case for air conditioners with rotary dial thermostats. I waited in th With the thermostat off and the fan set to auto. Subject 11046 Special Coverage Adjustment Heating Ventilation and Air Conditioning Blower Not Fully Functional on All Blower Speeds Inoperative or Runs Continuously with the Ignition Off. I hooked up the 18oz can of Arctic Chill and put the whole can in. Consider this a good thing. I never found the cause and the blower motor is coming out anyway. January 17 2016 The fan switch may be at fault but a more likely reason is that a blower motor resistor that controls the voltage going to the blower has packed it in. Condenser coils are located inside the outdoor AC unit and release the heat from inside your home. Called two dealers and was told the Blue Tooth module needed replacing at an insane cost of around 700. On our 1991 Civic and 2003 Accord and Pilot the fan often run after car is turned off if car and usually weather was hot. The way I have to turn it completely off is first turn the a c switch off then wait about 1 to 2 minutes start the car again let it run a few seconds then turn it off. A hose has come loose. If your furnace keeps shutting off it could be due to low airflow. Grass weeds plants or children that stick into the fan blade path and stop or impede the fan motor when it is running. Alright guys I have a 2010 Chevy Traverse AWD 3. 2003 2006 GMC Yukon Yukon XL. Car AC Smells Bad The Causes And Solutions. Turn the a c off and switch the car off then start the car again and the air conditioning light is on. However if they re stuck the compressor 2002 ZX3 Stalls at idle when heater is on I have a 2002 ZX3 and at an idle it stalls if the heater is on. I would drive for 10 12 mins when it sould come on. If you d rather not wait a day you can also turn your air conditioning system off but keep the blower on. If the unit continues to run it may be the thermostat. Step 2. When I shut off the car after running it the AC and blower motor fan continues to run after shutdown. Even with the thermostat removed it randomly turns on. Probably the mechanic will remove lots of parts before the car ac blower and air conditioning checked this has to be done to give way to the checking of the AC duct it just might need some air duct cleaning. As debris builds up on the coils the air conditioner will become less efficient causing the air conditioner to work harder to cool down. If you have a vehicle with climate control system and a variable speed blower motor and the blower motor won t shut off and stays on HIGH with the car turned off and the key out chances are the blower motor motor control processor is toast or the HVAC control module is damaged. I think it 39 s primarily for cold weather it keeps the car interior warm until the heater core completely cools down. Continue reading quot 2004 Chevrolet Silverado Blower Will Not Turn Off quot Go back inside and turn off the air conditioner. Sometimes the blower will turn ON by itself and then cut off again. There are several indirect issues that cause low airflow. keep the air flow settings on re circulation. Solution Turn off your A C and check to see your outdoor unit to see if anything is blocking the fan. However the car wouldn 39 t start earlier when turned on. 9. If AC is turning off after 15 minutes or less every single time or even just minutes after it first kicks on it s called short cycling. Would really like to avoid a costly electrical diagnostic test. I have an intermittent heater blower fault and haven 39 t come across a similar problem in other threads. Method 1of 3 Collecting Initial Information. If it does seem to be an electrical problem with the fan or circuit turn the air off and take the vehicle to a qualified mechanic for repair as soon as possible. It has been happening probably 4 or 5 times a week. On then off etc . With the AC on the register bottoms out at 53 F. Today I went out and used the blowers for about 45 min while I did some work on my laptop. Blue Red is from the unswitched voltage on the fuse block. The most common cause of your air conditioner not turning on is an excessive build up of water from condensation within your HVAC system. The first step is to lower the passenger side hush panel under the dash. Remove any objects that obstruct the fan blades. com Replace the ECU cover if it is compromised in any way. I have a 2002 BMW X5 4. The most common causes of broken air conditioning are leaks or compressor issues. I also cannot turn the rear defrost on. This problem occurs only randomly. By the blower motor there is a blower motor resistor module that gets hot and will melt the connector to the blower motor. Hold down both buttons and turn the key all the way to the on position. In short the blower motor Generally an OEM harness will not have the problem of alternator run on as there is usually a resistance wire in the dash harness to keep this from happening. Though generally not a safety concern a broken blower motor can greatly reduce the comfort of your ride in hot or cold months. This is not the interior fan but the battery fan and on top of it the car is parked in the garage shade with the garage door closed 85 F temperature and the car cool to touch. Look in your owners manual. It would not shut off when turned to the off position. When your AC is functioning well you look forward to taking a ride in the car but if it starts to malfunction it can be a hellish experience because the temperature of a hot car can quickly My blower motor is running on low speed as soon as I turn the key to on. I 39 ve got an 39 04 3s hatchback with 110k miles. An air conditioner with an overheating blower motor may shut itself off to prevent damage and electrical hazards. Turn off the vehicle and let the engine cool completely. You will need to examine your own vehicle Turned truck off and within a few seconds heard sparks smelled smoke. Made a left hand turn and suddenly the air conditioner radio lights windows stopped working. Maybe a computer glitch Try disconnecting the battery leaving it unhooked for a few minutes and then hooking it back up. If for radiator fan Check your engine temperature without starting the car when the blower is running assuming into few hours after you turn the engine off the last time. The interior AC blower would continue to run after the car was turned off and eventually kill the battery. It could be a loose or worn out fan belt. Afterblow air will be delivered through the last mode setting made by the vehicle operator or automatic system. Replacing the quot Power Transistor quot under the dash on the passenger side of the car eliminated the problem. This 2004 Chevrolet Silverado came in with the complaint that the blower motor will not turn off even with the key off. It is in fact easy to spot the problem as the distinctive sloshing noise of water moving around can be heard from inside the car. I tried a new relay and it still blows. The ac blower motor is usually located in the AC duct housing or heater case assembly. Recover the refrigerant from the system and make any necessary repairs to parts such as O rings hoses lines or evaporators. It appears to be the blower Blower works fine but does not shut off when turning off ignition and removing key. If you have a rooftop package heat pump or gas pack the blower motor is inside the unit on your This morning I got in the car and heard a fan running without the key in the ignition. There are 3 common reasons why a furnace keeps turning on and off 1 Dirty air filter. 3 grand touring model. Usually undersized air conditioners have much better humidity removal capability as compared to over sized air conditioners since the former have longer cycle times. . Also needs a new blower motor resistor since The blower is suppose to run according to the manual for 45 seconds after the thermostat is satisfied also shutting down the outside unit compressor. Discuss 2003 Santa Fe AC comes ON goes OFF then back ON at startup in the alt. Cadillac 39 91 Sedan DeVille. The blower keeps working it it only blows vent air. Also the controls are unresponsive. Any The ac blower motor is usually located in the AC duct housing or heater case assembly. Solution Change the air filter. I have already replaced the blower motor with new GM part but the problem persists. After the AC has run for 15 20 minutes it will turn off. The AC condenser fan replacement cost is between 300 and 425. The parts are priced at 245 to 330 while labor could be 55 to 200 depending on your make and model. 88500 mi US 280 Blue tooth quit working. autos. Then turn on the AC and see if there are any weird noises. Last week the blower for the A C and heater stopped working on my 2003 Acura TL Type S. I 39 m not having any power problems at all. 563 Posts. But your issue may be elsewhere. It will fluctuate between vents when pressing the off bu AC is meant to come on and stay on for at last 10 15 minutes often much longer. Also if I make many stops where I turn the car off in a short period of time the car will not stay running unless I have my foot on the gas but if i let it sit for an hour it is fine again. Check the coolant level. when I turn the ignition key off the blower motor continues to run. First the air conditioner may not be the problem. In checking these parts it needs some expertise of the mechanic so a car shop that specializes in AC repair is necessary. If your blower motor is overheating you ll see some very clear signs. My ac air blower went bad in my trailer but for the last 6 months it couldn t keep up with temp l had it set on will new one be able to keep up On 2020 07 29 by Tawnie The thermostat fell off wall into dogs water dish. Turn car off. The reason behind is the overheating and drawing too much power causing the circuit breaker to trip. I cant think of anythng that should run an hour after shut down. This is why the AC is short cycling. Discussion Starter 1 Oct 15 2006. What would cause the blower motor to be stuck on high It does not matter if I turn the fan speed knob to 0 1 2 3 or 4 it will not change speeds or shut off. The power requirement of an air conditioner is enormous. Stays off more than on. Also shut off power to the indoor air handler or furnace and verify that the power is off. The blower motor for the heating a c will not turn off. 1 Answer. If the vehicle is truly off e. 1. 1 With ignition off but blower fan running if Relay 31 Under hood second from firewall is pulled blower stops. if the car will need a blower motor turn off for If the you talking about the aircon blower running by itself without the keys in not sure if the AUTO button in the climate control has anything to do with it. I tried turning it on Full Auto in both the hot and cold settings nothing. Summertime is the period where you re banking on your car AC to keep you comfortable as you weave your way through traffic under the unforgiving sun. Rating intermittent blower is running but condensing unit is off. Turning off your car will cause the Freon to move from the high pressure part of your AC compressor down to the side with lower pressure to equalize out. It also helps to keep the air conditioner s compressor cool. Since it continuously cycles on and off it 39 s subject to wear and tear every time you use your A C. However the issue is sometimes simply a matter of power supply or a thermostat However the best way to keep it clean is to keep the airstream from the blower clean. The dealers would turn on the afterblow feature that is when turned off the fan for the cabin would continue to run to dry out the AC ducts and related tubing to help with this smell. It can also be the most costly that is if it s not caught and fixed in time. Couple of questions. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. switch on the blower motor. The blower motor for ac and heater keeps running on high even after turning off climate control and speed controller for fan. . Whether you have a physical fan speed switch or the dual climate feature in your Silverado there is a button or switch that is dedicated to start or speed change of the blower for the AC or heater. Discussion Starter 1 Nov 24 2013. While AC pump noise is totally normal for your car s air conditioner hissing at any other point may give you reason to visit your mechanic just like a buzzing noise. I bought a vac pump and gauge manifold and vacuumed the system for 15mins closed valves and let set for 1 hr system maintained 30 vac. The AC recirculates air inside the room so the air can keep getting cooler and cooler instead of using air from the outside which would be much hotter. After turning OFF the AC keep the fan Parking lights would not turn off after changing to bright or turning off headlights. Hi Guest Save cars. Source blower motor ground. I currently have the maxi fuse pulled. 2000 BUICK CENTURY HEATER FAN STUCK ON HIGH SPEED EVEN WITH ENGINE OFF. When you turn on the car AC you expect it to blow hot air for the first few minutes. Core case seals blower house seals or evaporator core case seals All can open up and diminish air flow. Check out my web site http www. Blower motor for AC works intermittently. I 39 ll be driving around and after I turn my car off to go in a store and then start it back up again. switch OFF the blower motor. Clicking while the A C is running If you gradually hear clicking coming from your outdoor unit there s probably a small object obstructing your unit s fan. This failure may occur when the vehicle is operated in ambient temperature conditions of 23 C 10 F or below. IT IS A BAD PRACTICE IRRESPECTIVE OF THE KIND OR MAKE OF AUTOMOBILE. On 2 it has a good balance of cold air and movement but still cycles on and off. Joined Nov 25 2008. When compressor shuts off with a satisfied thermostat my blower motor shuts off mediately too. This is something new in the update to quot fix battery overheating issues quot in Model S. When you turn on your air conditioning and hear rattling banging or other unusual sounds it s normal to feel a bit nervous about what is causing the issue. Have a 2005 Touareg V6. Your vehicle should have a complete relay diagram showing the location of all of the vehicle 39 s electrical components such as fuses and relays. The main blower stays on even when I shut the off button. you will start at the blower motor itself hotwire it with power and ground if that works then work your way backwards in the system the blower resister is usually next in line and a big problem on many cars. I still get the N code. Now turn the breaker on again. One quirk seems to be that if when turning ignition off I turn the AC switch off the blower motor will not come on the next time I crank the truck and turn on the AC. Disconnecting the limit control brown and red wires does not turn the blower off. When I got home I let the car cool down for about 30 minutes and when I turned on the car the AC was blowing full speed and was getting cold like normal. The condenser coils dissipate the heat as the refrigerant passes through the coils. Turn the AC back on. c. I have been trying to find info on this with not 01 Condenser Coils are Dirty. Your car fan will run for a few minutes after you turn off the car then turn off. Change the cabin filter while you have it opened up. It doesn t make sense to only replace one aspect of the unit. To do this feel the air coming out of the vent with your hand. A quick web search revealed that this seems to be a fairly common problem for Mazda CX 9 vehicles that were made between 2007 and 2009 and it 39 s probably why you wound up finding this blog post. Then move the steering wheel and everything shut off again. The compressor works like a pump to compressor refrigerant. This video contains Paid links that gives me a 6 commission if you click and buy any product on that website . If your air is blowing cool but not cold the problem could be a clogged filter cooling fan problem radiator trouble or it could simply be that you need to recharge your AC . Pulsating. Over sized unit When a unit is sized correctly it is capable of removing the heat as quickly as it comes in to the home or business Ideally the system should be able to keep up with On my buddies 01 f 350 the blower motor in the cab keeps running when he turns the ignition off and pulls the keys. To keep the compressor on I removed the relay and jumped the terminals to turn it on. In a central AC system the main blower forces cold air through the ducting and from there into individual rooms. Some of these safety switches must be manually reset before the system will turn on again. If the condenser coils are dirty they won t be able to dissipate the heat as effectively. switch is off and the fan switch is off. Then turn off the car. If only the pulley is turning The AC will not turn on and the front blower motor will not turn on in any setting. 0 TDI 143 130 000 miles Problem Intermittent heater blower air con Scenario First thing in the morning on daily commute the blower comes on as soon as the car is started normally goes to auto . The fuse box in a Lincoln Navigator is located by the brake on the left lower side of the steering wheel. The coolant is housed in a translucent plastic jug in the engine compartment. I had a similar issue but it was my heater blower motor. Hold down the Recirculation Button and the A C Button. You may be able to check the compressor by listening to it. I live in Miami and need AC. The air conditioning system in your car is a closed circuit containing a low and high pressure side turn OFF the AC while the engine is running. NEW by Anonymous I have a york system it works fine but the condensing unit shut down but the blower keeps going. 00. com Car complaints car problems and defect information Heater AC fan motor keeps running after car is shut off On a 2002 BMW 325i the fan motor keeps running after the car is shut off. Average failure mileage is 56 200 miles. 70000 mi US 105 Connection from battery to car was eroded and battery was not charging or managing power at all. Wait 45 to 60 seconds for the LED lights to stop flashing. 2 Swapped that relay with adjacent identical. Rear blower would not turn off. An air conditioner making a pulsating noise isn t necessarily a bad sign a little pulsing noise can be perfectly normal when the air conditioner is operating. and the car comes to a complete stop red light stop sign or in traffic the car cuts off. When I turn the the key and pull it from the ignition switch the fan stays off for 2 or 3 seconds I hear an audible quot click quot and the blower fan starts at low speed again. If a duct somewhere between the blower and a room Heater Blower Motor Resistor. Find your electrical breaker box and turn off the switch that controls power to your air conditioner to start the thawing process on the coils which could take up to 24 hours. A dirty air filter restricts air from getting into your furnace. Be very careful not to get your fingers caught in the blades as the fan will most likely rotate easily. Another piece of advice that is connected to this age old issue The blower is supposed to stay on for a few minutes after the car is off. These conditions may be caused by a blower motor control module failure. I have a 2001 Dodge 2500 the Ac was charged by a certified shop. Called Mazda Blue Tooth support. This is a quick and simple repair for a professional. When the fan speed slowed down on its own on the interstate it was probably blowing at a speed similar to what the fan would normally blow if set to the middle position or maybe even below Blower motor problem since 2 500 miles NOW at 10 000. . The blower motor is the component responsible for pushing air through the vents of your vehicle s heating and air conditioning systems. If the fan s not blowing air won t be flowing very well. If your fan motor is a 120V it will most likely have four colored wires black blue red yellow etc. Have to do this from underneath. 2003 2007 GMC Sierra. You can test the fuses using an inexpensive 12V test light or digital voltmeter preferred and check that all electrical connections are clean tight and secure. Limit or safety switches turn off the system when a malfunction occurs. Solution To figure out where the problem exists start the car and with the key in the ON position and the car running turn off the key. I replaced water pump and radiator and coolant temp sensor. car ac blower keeps turning on and off