Car Ac Blower Motor Starts And Stops

It would start and run normally for a few minutes and then the blower would shut off. Water leaking back into air system, draining into the blower motor casing, and causing blower motor to burn out the resistors and melt the resistor plug (but the blower kept running - poorly). Re: blower motor keeps running whether car is on or off Post by mrbrian200 » 19 Nov 2017, 19:37 I'm not expressly familiar with the inner workings of the electrical portion of the ignition switch, however, when I first bought my S60 after it had been basically sitting for the better part of six months I noticed something in the ignition switch. 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. If the blower motor fails to start, nothing. in Brighton, Michigan. I think the windings gave out. Alarm will not stop going off and car will not start now Not rated yet how to replace Corvette Air Conditioning Blower Motor Fan Speed Switch on 1986 corvette. 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. So, if you happen to your heaters stops working, you would need to unblock the seized motor, or to replace it. As the relay is the switch that supplies current to the blower motor, if it fails internally, then power will be cut off from the blower motor circuit, causing the motor to no longer function or blow any air from the vents. The Blower Motor is a part of your car's climate control system that forces the air through the vents into the passenger cabin. The blower motor is a D/C electric motor driven by varying current supplied by the blower motor final stage unit. A/C Blower Motor High Speed Only. Second, make sure that power is getting to the blower motor. Basic instructions on how to troubleshoot the heater blower motor of a Saturn S-series. I have read everything on this site pertaining to this problem. The most common cause of window air conditioners not blowing cold air is a lack of adequate air flow. It starts out slow and you figure there is something wrong with resistor, resistor connector (which melted) or the blower motor's old, or they-don't-make. Like many other parts in your Jeep, the electrical motor is susceptible to wear and tear as well as possible failure throughout the years. I am driving and the AC blower is working fine, I turn my car off for like 5-10 minutes to go drop the mail and when I come back and turn the car on, the AC blower just won't start again. 2004 Impala Thanks for the trouble shooting steps and tips. Lastly, a malfunctioning heater core can leak coolant into the car and damage the blower motor and resistor as well. From online research, what I've gathered is that it's likely either the blower motor itself or the blower motor transistor/resistor. All the different components of your vehicle heating system are available with Parts Avatar whether it is the blower motor resistor, car heater fan, and fan shroud or car fan motor. There are many things that can cause a compressor to stop working. If it is a true temperature shuutoff, I'd rather it shut down that bun out the motor. If I dare put the climate control thing back to life -> blower motor goes full blast and cannot be stopped unless I turn off the vehicle. When the blower motor suddenly stops switching on, the first thing that you must check is the fuse. Therefore, it's essential to keep it in good condition if you want your air conditioner to work. Check out this home repair tutorial video that demonstrates how to fit and replace the fan motor and fan blade on a Bosch and Neff oven. However after I turn the AC off for a while, one to two hours, the blower can com back working for several hours, then it stops again with hums. Ac blower stops when you accelerate. The vehicle was taken to the dealer for diagnostic testing. Blower Motor Control Module 2 Answers. Today - as i stood with the car somewhere and let the engine run (idled) - i noticed strange noises from the front: The AC - compressor runs and stops after maybe 1 - 2 seconds. 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. This is starting to worry me as I don' want to have to jump the battery or even replace the battery, let alone have the blower motor burn itself out, especially in the recent heat have we have had. I found pictures of regular engine location, but not the supercharged. Especially during hot humid summer days. If you have a situation where your car's air conditioner compressor clutch doesn't engage, try the troubleshooting techniques described here. I have five other 240 series volvos, so I fully expect to be replacing another blower in the future. Basic instructions on how to troubleshoot the heater blower motor of a Saturn S-series. Step 5 shows 1 method. Power supplied from the fuse panel. Five Reasons an Air Conditioner Compressor Will Not Start. Your vehicle's AC system consists of a compressor, condenser, evaporator, expansion valve, a series of tubes and several fans/blowers. Best Answer: If there is never a squeal when you start the car with the heater off, it is probably the blower on the heater that is squealing. 12 Car Cleaning Tricks Local Dealers Don't Want. Ac/heat blower fan not working, randomly turns on and off. I recently noticed that the blower motor in my wifes 2002 V70 is running, even when the the key is out of the ignition. in Brighton, Michigan. I replaced the motor and resistor already. Attach one to the battery’s positive terminal and another to the battery’s ground. So, if you happen to your heaters stops working, you would need to unblock the seized motor, or to replace it. It's annoying, to many people it sounds like a serious problem, and it's also hard to pin down what exactly causes this problem. If it won't, it's seized, and must be replaced. The torque to drive the motor of your electric fan comes from the magnetic field induced in the motor coils when electricity passes through the coils. Anything from no air circulation to annoying or noisy operation. Home; About Us; My Account; Contact Us. If the blower motor doesn’t turn on than that doesn’t mean the motor is bad, other components can cause a blower motor to stop working. And no air blowing with no blower noise. Locate the blower motor and remove it from the car so you can test it on a workbench. You'll need some patience to get these AC systems working again. However after I turn the AC off for a while, one to two hours, the blower can com back working for several hours, then it stops again with hums. The first problem is that no matter what setting I have the fan set to (off or 1-5) it will randomly turn onto full blast for a few seconds and then turn back to wherever it was originally set. (side question: what is this fan called? is it the AC fan? The blower motor fan??) The story: So, one day, it just stopped working. Please share this with your friends Austin Davis. I pulled the 30 amp A/C fuse under the hood to shut it off. The second problem SOUNDS like-- The Infamous Blower Motor problem. Blue/Red is from the unswitched voltage on the fuse block. How To Fix Your Squeaking/Screeching GM Blower Motor. I put a new blower in last winter from checker auto parts cause my other one squealed and I seem to remember it working good when I put the new one in. Driving around on a hot day in a car without a working air conditioner can be uncomfortable and even dangerous in extreme heat. I shut off the AC then put the blower on max and noticed it slow to a complete stop. If the blades don't spin freely, replace the blower motor. 41540 mi C $60: Blower motor seized because water in drain well area got closed up with leaves. F15 (30A) Head lamp washer pump. Also,the blower speeds are not working. Often when faced with car AC airflow problems both professional and DIY car mechanics might think it's a blower motor problem. The controls were set for heat. Heating Ventilating and Air Conditioning; Cars & Vehicles Air conditioner starts then stops after only a few bad outside condenser fan motor or blade/ no water flow or restriction to water. Live chat: Where is the MAP sensor located on a supercharged Pontiac Grand Prix GTP 3800 motor? I cannot seem to find it. (side question: what is this fan called? is it the AC fan? The blower motor fan??) The story: So, one day, it just stopped working. Driving around on a hot day in a car without a working air conditioner can be uncomfortable and even dangerous in extreme heat. The compressor is an important part of the ac unit and many people report that the air conditioner compressor starts then stops. In a car the ac is actually driven by a belt and pulley which is mounted on the engine shaft. This can be annoying, but troubleshooting is easy. The AC evaporator acts like a huge ice cube. Although this is one of the possibilities there are several other common ones that can change the normal airflow from the air-conditioning or heater. When you crank up the air on a vehicle that's 10 to 15 years old there's only about a 50 percent chance the air is performing as intended. The AC used to blow cold when we start the car. The car was at O'Regan's Mercedes-Benz from 9:30 to the time the repair was completed, under warranty, at 4:00 this afternoon. Reconnect the electrical connector and you’re car heater blower motor is back in business. (The black wire is usually the negative. My blower motor does the squeak squeak squeak when I first start out in these below zero temps, but goes away once it starts to spin up with the heat. It has been happening probably 4 or 5 times a week. Before reassembly, make sure that the recirculation control linkage and doors move smoothly without binding. My blower motor will start and stop randomly with the AC on. is my resistor blower motor or switch messed up 6 Answers I have a 01 slt plus and i think my resistor has gone out i get in the car drive and i start to feel air but when i stop it quits putting air out the switch says off and you can still turn on the ac. I can hear the blower blowing the air, but nothing really comes through the vents. I tried my best. When I turned the car off the blower continued working even with the key out of the car. It couldn't be the actual blower motor since it shouldn't default to on if it is faulty. so the polarity of the AC connections is not important. Read on to learn about common A/C issues and stop by today! Your car's air conditioning is acting up, but you don't know what's wrong. You can get a can of fan belt lubricant and squirt it on the fanbelt when the engine is cold. As the relay is the switch that supplies current to the blower motor, if it fails internally, then power will be cut off from the blower motor circuit, causing the motor to no longer function or blow any air from the vents. TEST 1: Applying Battery Power And Ground To The Blower Motor. As no heat+New England weather=no driving car. How to wire up a single-phase electric blower motor. Testing the blower motor is as simple as applying battery power and ground to the blower motor terminals. Then after driving for several minutes, the fan starts and everything works fine. Gently pull down on this tab while rotating the housing to unlock the motor/fan housing from the car (see 3rd picture from bottom). I get a lot of questions about car air conditioning systems not blowing cold enough. Remove your existing. In a car the ac is actually driven by a belt and pulley which is mounted on the engine shaft. 8L GM vehicle is stuck in only one speed (usually stuck in high) or no blower speeds work then there's a good chance that the blower control module is bad and behind the problem. 3) Checking your relay, as relay could be bad and not providing the voltage to it. Often when faced with car AC airflow problems both professional and DIY car mechanics might think it's a blower motor problem. It could've stopped working. Your Jeep's blower motor forces air into your car by spinning at the speed set by the blower motor control switch inside the cabin. Although the bower worked, there sits in on it a rectifier pack that looked ok but must have been shot. I have checked all the fuses and none have problems. My blower for the heater doesn't seem to blow very hard even on high. When I first start the car, the fan doesn't work. Help! AC stops working after 20 min. The blower keeps working after I hit the dash I turn the car off then the next time I start it (10 mins later) and the blower does not work I have to hit dash again. They have a durable ceramic coated metal housing and a high quality molded impeller. the unit isn't working in its needed mode for long adequate to holiday hi and lo rigidity switches if it at present kicks off. It is not the fan blower motor because if I turn the AC off then back on again the fan blower are still on "hi" and the loud motor noise stops at least temporarily. Average repair cost is $330 at 68,550 miles. Whether you need a Jeep Cherokee AC heater blower motor, an AC blower motor for Chevy Tahoe or anything in between, AutoZone has everything you need. when the blower stops, the ac ices up and stops working or shuts down. Hello Guys, I have a problem with an 88 Cadillac Deville. If it is set on automatic AC, I think it runs longer. The alternator in your car produces voltages between 13 and 15 volts. CarComplaints. This occurs whether it's the air conditioning or the heater is switched on. You can get a can of fan belt lubricant and squirt it on the fanbelt when the engine is cold. We have a brand new BMW X3. Chevrolet Silverado 1999-2006: Why Doesn't My Blower Motor Work? Why Doesn't My Blower Motor Work? If your blower motor is beginning to go, you'll want to replace it sooner than later because a bad blower motor could lead to a fire. So by running the fan continuously, there are less starts and stops put on the motor which may actually extend the motor's life!. Technicians are to replace the blower motor control module, also called the Linear Power Module (LPM), with the P/N listed below. I cheched under the hood and found that the air conditioning was on and that the hose and dryer were completely ice up. This will be something electrical, not an A/C problem. How to Check if Your AC Fan Motor is Bad in 7 Steps. Corvette Mods 1997-2004 C5 Corvette Blower Motor Resistor Auto is a high quality part that is quickly installed on your 1997-2004 C5 Corvette. After checking the breakers, thermostat and overflow shut off (did not have one) I saw something about a blower motor capacitor. Brrr! It's cold in here! A chilly passenger compartment is not always a sign of a faulty heater core. I replaced the blower motor resistor and the control unit with new parts from rockauto (ACDelco). examine to establish if it does a similar element in A/C and in warmth mode. Like many other parts in your Jeep, the electrical motor is susceptible to wear and tear as well as possible failure throughout the years. It seems that once it gets hot outside, say over 90 degrees or so, and the car is sitting in the Texas sun the blower motor won't kick in. A faulty blower motor might stop a vehicle operator from thawing or clearing fog from the windows. My house outside AC works fine, but the blower inside sometimes stops working with huge hums. Please share this with your friends Austin Davis. There's no whir or hum of the fan motor, no gusts of cold air. Check out this home repair tutorial video that demonstrates how to fit and replace the fan motor and fan blade on a Bosch and Neff oven. Front blower periodically stops blowing. Because of this,the room doesn't chill at all. I have a 2005 impala with a 3. Blower Motor Control Module 2 Answers. Sometimes referred to as the PCB, this is an electronic control board that operates the fan motor and compressor circuits using relays mounted on the circuit board. This is one of the most common and easy ways to know if your air conditioner blower motor is broken or not. How to deal with Car Air-conditioning Problems if everything else is running in the car - the blower motor is working fine, warm air is coming out of the AC vents, the AC compressor clicks. When you crank up the air on a vehicle that's 10 to 15 years old there's only about a 50 percent chance the air is performing as intended. Alarm will not stop going off and car will not start now Not rated yet how to replace Corvette Air Conditioning Blower Motor Fan Speed Switch on 1986 corvette. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. This can also be labeled as MAX A/C. Touch the two wires to the blower motor's power and ground pins. If fuse is ruled out the simplest is the blower motor resistor. Today my car's AC fan wouldn't come on at any speed setting, only to come on later in the day… what could it be? Well, I don't think it's the fuse (otherwise the fan wouldn't come on at all,) it's probably not the blower motor resistor either. A/c and blower stop completely; then comes back on again. You then hear a hum coming from under the dash. Disconnect the negative and positive power supply. An air conditioning compressor is the heart of the the unit and can be a real problem if not working. This means you can quickly turn the heater up as a high as it will go on a cold morning, so you can clear the windows of fog. Heater blower stops working randomly. I have a 2002 I35 that has an intermittent Blower Fan motor. Like many other parts in your Jeep, the electrical motor is susceptible to wear and tear as well as possible failure throughout the years. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay. It's running for 2 minutes, turns off for another 2, then turns on again. Here you can see the blower motor and the blower motor resistor. If the fuses,relay,resistor and blower motor checks out okay like you said, i start by checking the blower switch and work my way towards the motor. I check the blower motor and work OK. Very common for a blower motor to wear out and start drawing too much current and damage the blower motor resistor or module. Replaced the blower motor and resistor with no change. Attach one to the battery’s positive terminal and another to the battery’s ground. photos by Randy Mullins [Randy wrote me a note thanking me for my article about the blower motor replacement - thanks Randy! He fixed his blower motor instead of replacing it. 25 thoughts on “ BMW E46 Heater Fan Not Working Correctly ” Robin 06/05/2012 at 6:29 pm. My rear AC blower has been sporadically working lately, but as of yesterday won't turn off at all, even with the motor off and key removed. Blower motor problems can cause many driver complaints. If the blades aren't rubbing against the housing and the fan motor is still noisy, check the fan motor bearings for wear. My home A/C blower motor runs for a few hours, then will not start again after reaching set temperature. 0L L4 > Heat & Air Conditioning > Blower Motor Control Module / Resistor. Its free to use too!!. When this happens the motor becomes intermittent. [ 2 Answers ] We have ~ 1991 Carrier 58sx high efficiency condensing furnace and central AC. Ideas? Thanks~~ Weipeng. Randomly, the Front Blower Motor will stop moving cold air. AC Blower Speed Slows Down On its Own When Set to High and Running Car for A While. I replaced mine with 1N4004 types, which are much more rugged, more easily handled, and cost just a few pennies more. It worked for a few days, then the blower motor stopped working again. Each of these has a separate capacitor to start it up (the start capacitor) and to keep it running (the run capacitor). So the blower motor is not coming on. If I turn the air conditioner off, the air starts blowing again. I set everything up today to mix some concrete and turned the mixer on. Thanks for any advice Mark. My blower motor came on unexpectedly while driving in quite warm weather. Check out what he's been through, and why he should have asked an expert from the start. Air Conditioning problem 2000 Lincoln Town Car V8 Two Wheel Drive Automatic 125000 miles AC works fine (cools down to 45F), but stops working and blows hot air into the car as soon as the outside temperature reaches 84F or more. This type of Engines rarely seize, but when they do, it is almost always due to a long period of non-operation. Had to cut fan frame to get motor out to grease bottom bearing. What else could be wrong with my car?. Part 1 of 3: Checking the inside of the car. The AC button has a light on the button that illuminates when the air conditioner is turned on. DC Motor only runs. The blower is on the far passenger side. 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. My air conditioner / fan stops blowing and then starts up after a moment or so, but the truck seems to be running fine, - Answered by a verified Chevy Mechanic. ( the only thing I can find on the blower is the name BQ the model number is stamped in ink and is smuged out it looks like BD1817 ) Im sorry thats. 14V is a good reading. Locate the blower motor and remove it from the car so you can test it on a workbench. The alternator in your car produces voltages between 13 and 15 volts. If it will work on high but not at the lower speeds, then it's the resistor pack. It is not the fan blower motor because if I turn the AC off then back on again the fan blower are still on "hi" and the loud motor noise stops at least temporarily. It starts about 10 minutes later - Jeep 1993 Grand Cherokee question. The trouble relates to the blower motor and its activation. Rear wiper motor stops when it is cold. The Haynes manual says the blower is activated by a relay. Why Does my Car Air Conditioner Squeal? July 22, 2016. Did you check with a meter at the connector on the blower motor to see if you have 12 volts there? Did you look inside of the black box at SP106 to see if you have a burned ground wire there? Did you run the ground test by looking at the yellow light inside the AC button? You start the car turn on the fan to #4 with the AC button pressed. It happens regardless of whether my car is moving or not. Consult your furnace owner's manual for directions on properly oiling your blower motor and other maintenance suggestions. Blower doesn't work Equinox Blower doesn't work Equinox, no blower or intermittent operation. When this happens the motor becomes intermittent. But even a well-maintained motor might stop working, and then it's time to know how to check for an open or a short. when i turn on the heater or ac a clicking sound starts and lasts for 15 seconds. Thanks so much for this. I don't know for sure if that is normal, but it does not seem normal to me, especially when normal current draw for a blower motor on high speed is somewhere around 17 or 18 amps and the blower motor circuit is rated at 40 amps maximum. If the fuses,relay,resistor and blower motor checks out okay like you said, i start by checking the blower switch and work my way towards the motor. 41540 mi C $60: Blower motor seized because water in drain well area got closed up with leaves. ) I swapped out the 40 amp fuse but no joy. Dash Control Unit. So any ideas as to why it's not? Or a place to start checking? I really need to start figuring this problem out. The temperature in my house is 79F. If your fan motor no longer blows at the high speeds it used to, then it's probably worn out from years of use or has other issues that limit airflow. Ask Question the blower motor in the furnace housing. My blower motor will start and stop randomly with the AC on. It will typically refuse to start, and if you thump the blower housing hard w/ your hand it will come on and run for a while. A furnace blower motor is one of the most important components in your gas or oil furnace. Re: blower fan works for a whilethen quits?? Updated 7:05pm Eastern on 8/7/07 While this is not a good fix you might have someone that does electrical work rig up a power cord to the blower motor (If the motor is good) and plug it in. Depending on the exact location of the blower motor (on your specific 3. Is your air conditioner blowing but not cooling? Here’s a quick rundown of the issue. This will be something electrical, not an A/C problem. com : Car complaints, car problems and. I am asking all EDGE owners that are having problems with the AC to contact Ford Motors and file a complaint asking for a recall to correct this problem. The type of compressor used by many cars in the UK has changed drastically since that time so if your model is say 2003. I'll be driving around and after I turn my car off to go in a store and then start it back up again. I have a 2004 Colorado that has the blower motor shut off at random times hit the glove box and it comes back on i have replaced the resistor wire with a cut and join with connectors based on advise. It's running for 2 minutes, turns off for another 2, then turns on again. If your air conditioning smells musty, this usually means that mold is forming inside your air conditioner. Obviously I have to start this long before I go to bed, otherwise I hit the curse of 45 minutes. 12 Car Cleaning Tricks Local Dealers Don't Want. 2014 Ford Fiesta × Recent Vehicles. Imagine you are driving on a hot summer day but suddenly your car starts overheating and you can't use the AC. After waiting a minute, the fan would blow hard, then slow to a stop again. May not turn on when vehicle started or stop while vehicle has been running, nothing specific to recreate issue. 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. Anything from no air circulation to annoying or noisy operation. It starts out slow and you figure there is something wrong with resistor, resistor connector (which melted) or the blower motor's old, or they-don't-make. A HVAC Blower Motor is commonly referred to as different names, depending on the unit it is used in. The blower motor is located below the glove box. Its 4 seasons brand. I've got some problem with the A/C of my Citroen C5 2004 hatchback. Step 5: Wiring can be done 2 ways. 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. This can be annoying, but troubleshooting is easy. ? Three times (weeks apart) I've started my car and when I go to turn the blower/fan on nothing happens (i do hear a click where the blower motor is but no blowing) but then like 3 hours later when I turn it on it works. Our air/heater fan only blows air when it is set on high. The auxiliary blower motor icon will flash to indicate that the blower is not available. After waiting a minute, the fan would blow hard, then slow to a stop again. Many owners are having problems with melted electrical connectors that stop the flow of power to the blower motor. The condenser fan (if it has a dedicated fan) or the radiator fan most always comes in (with AC on) when the compressor discharge pressure (or, alternatively, the liquid line one; look for where a sensor or a switch is located on the high pressure line) rises over an operative threshold. 8 liter equipped GM vehicle) you can test it on the car or you may have to remove it for ease of access. Thermostat is set to 74F. ( the only thing I can find on the blower is the name BQ the model number is stamped in ink and is smuged out it looks like BD1817 ) Im sorry thats. written by Randy Mullins. Because of this,the room doesn't chill at all. This can also be labeled as MAX A/C. While checking the AC Condenser, inspect the Radiator / AC cooling fan motor(s). Imagine you are driving on a hot summer day but suddenly your car starts overheating and you can't use the AC. The most obvious problem that you can have with your air conditioner blower is when you flip the switch to the air conditioner unit and nothing happens. My central AC unit decided to stop on the hottest day of the year. 3) Checking your relay, as relay could be bad and not providing the voltage to it. ) 2) The time it takes to start can vary from 30 seconds to 20 minutes). Each of these has a separate capacitor to start it up (the start capacitor) and to keep it running (the run capacitor). Easy to use parts catalog. It would start and run normally for a few minutes and then the blower would shut off. I have 2007 Civic 4dr with an A/C blower motor that works only part of the time. The dealer found that there were melted wires that caused the blower motor to fail. Blue/Red is from the unswitched voltage on the fuse block. AC Blower Motor 1 Answer. Heater blower stops working randomly. I tried my best. I have a 2005 impala with a 3. Touch the two wires to the blower motor's power and ground pins. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. The blower motor resistor is usually located somewhere in the airflow ducting to keep it cooled preventing burnout. Thanks so much for this. Step 1: Turn on the AC. I have 2 issues: 1) The blower motor intermittantly cuts out. Finding the location of the fan assembly is a good place to start. There's no whir or hum of the fan motor, no gusts of cold air. If it isn't seized, check the control voltage on the relay that controls it. Most people would like to see frigid cold air blasting from their small dash vents instantly upon request. How to Diagnose a Non Working Air Conditioning in a Car. Whether you need a Jeep Cherokee AC heater blower motor, an AC blower motor for Chevy Tahoe or anything in between, AutoZone has everything you need. Some of the things that can cause blower motor not to work include: Blower motor, blower motor wiring, connectors, relay, fuse, switch/control panel, blower motor resistor, blower motor module and Ignition switch. The Haynes manual says the blower is activated by a relay. HVAC blower motor runs for a few minutes then stops. Step 5 shows 1 method. Re: blower motor keeps running whether car is on or off Post by mrbrian200 » 19 Nov 2017, 19:37 I'm not expressly familiar with the inner workings of the electrical portion of the ignition switch, however, when I first bought my S60 after it had been basically sitting for the better part of six months I noticed something in the ignition switch. This can also be labeled as MAX A/C. 2L that is having AC problems. Without the heating and air conditioning systems in today’s modern vehicles, we would all be miserable driving to our destinations. I have a 1997 Chevy Blazer 4. The torque to drive the motor of your electric fan comes from the magnetic field induced in the motor coils when electricity passes through the coils. menu shopping_cart. So any ideas as to why it's not? Or a place to start checking? I really need to start figuring this problem out. I took the cover off I see that the blower motor itself is a ways away from where I hit the dash. Buy online, pick up in-store in 30 minutes. I have tried replacing the FSU with a new one and it does the same thing. Failing capacitors are one of the common reasons for malfunctions in an AC. If your furnace has a PSC motor, a licensed contractor should regularly lubricate the blower motor with oil ensures that the fan is able to turn easily (ECM motors use ball bearings and therefore require little or no oiling). This time, he instructs us on how to solve the problem of the Blower motor in Saab 9-3. Two days ago, sunny, 15 degrees Celsius, hot in the car, tried the AC in my 2001 Jetta with 397,000 km for a few minutes. manual or auto, heat or AC, any fan speed or air flow (floor, defrost. Take the console, glove box, and cabin filter out. There are many things that can cause a compressor to stop working. One of the first symptoms of a bad or failing AC blower motor relay is a blown AC blower motor relay. A wide variety of inflatable blower motor options are available to you, such as air blower, industrial blower, and fan blower. If your furnace has a PSC motor, a licensed contractor should regularly lubricate the blower motor with oil ensures that the fan is able to turn easily (ECM motors use ball bearings and therefore require little or no oiling). Now the air handler is making a loud humming/vibration noise when the fan kicks in (the blower motor for the air handler makes the noise, not the gas furnace/exhaust blower). Take care — the motor will kick as it starts and there will be a large spark when it is. When faced with the failure of both the car heating and car ac systems you will need to first check what ac parts are not functioning properly or are damaged. Brrr! It's cold in here! A chilly passenger compartment is not always a sign of a faulty heater core. Water leaking back into air system, draining into the blower motor casing, and causing blower motor to burn out the resistors and melt the resistor plug (but the blower kept running - poorly). Required Tools for this Project. Like many other parts in your Jeep, the electrical motor is susceptible to wear and tear as well as possible failure throughout the years. Not only would this be. Consider that the purpose of gas furnace is to warm the home, and realize that it is the blower motor that actually takes that heat and directs it from the very isolated, insulated furnace and in to the actual. Locate the blower motor and remove it from the car so you can test it on a workbench. I told him that the air conditioning system was not running well, and that this was the sign. However, it only worked for about 20 minutes and the blower motor stopped working again. The controls were set for heat. So The blower motor and resistor are not the problem. The contact stated the air conditioning and heating units failed to work intermittently. Finding the location of the fan assembly is a good place to start. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. I would try something and it would start working and a couple days to weeks it would stop again Finally ran a jumper from the battery to positive pin on the resistor connector and everything worked. Hi Kevin! I do not know what could be your problem if it is not covered in the post I wrote on “Why does my air conditioner fan motor keep burning up”.