My Car Blower Only Works Sometimes

the only way to get it to work again is to restart the vehicle. It's a frustrating experience to turn on your furnace, only to discover no heat comes through the vents. In some cars, a failed blower motor resistor can cause a heater fan to stop working completely. Is there a way to test the resistor or do we just change it out and hope it works. I will be driving along and I need my a/c to work, but it won't go on. My heater works, but the blower only works sometimes. Citroen Xsara Picasso (2000 - 2010) - 2002 2. It will be set to 71 and will be reading 76. check blower motor fuse and relay,make sure they are plugged all the way in,and making a good connection. If that does not work, I would check the fuses second, then check the dash control switch next. I have 2007 Civic 4dr with an A/C blower motor that works only part of the time. Recognizing these symptoms and replacing the resistor returns the airflow through the car to the proper levels. Highly rated mechanics discuss common reasons windows stop working and what you should do. the blower will work in only the first 3 positions of the switch! Pissed that I had to pay $332. 16 Answers. Reader Question Hello Austin,I hope you are well. My thermostat signals the heater correctly and the burner ignites, but the fan doesn't always turn on. I have to wait until the car has ran almost 20 minutes before the heat turns on. You can avoid expensive repairs by troubleshooting furnace problems before calling a professional. I've tried it at various distances and this does not seem to make a difference. Any ideas where it's located and where i can find a manual showing location??? Learn more about Pontiac Grand Prix at the Edmunds. In other searches I've seen some refer to a resistor (which I know some newer cars have, like my Porsche Cayenne) but I do not see one on this car. The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn't work at low speeds. What could be the cause? is it the blower motor itself?. My only guess is that the pressure switch tells the radio/climate module to not turn on the blower. I put the heater box assembly in with only minor dificulty. 4 will still work is because there's no resistor to blow. AC will not work if no air is coming from front. 2006 Grand Caravan Blower Won't Work as my husband has NO car experience at all, and we needed what is called an EXPLODED VIEW OF THE BLOWER MOTOR POSITION. Recognizing these symptoms and replacing the resistor returns the airflow through the car to the proper levels. as in the blower motor does not even run, or nothing as in no heat? it was a cinch to fix the Accord after I had the A/C. Everybody thinks it's easy to do A/C work but when it only works for a short time, it's an indication that they did not know what they were doing and misdiagnosed the repair. I just had my air conditioner replaced. When it does it blows cold air (which is good), but only when it wants to. 0 HDI off Ebay yesterday {and I put those details in the subject header today because someone ignored the requests to do so!} , the guy told me the heater blower does not work (but it will only be the fuse), I have also realised that the A. My front blower is intermittent, too. My car will only start producing hot air when I floor my car and only sometimes when I'm just sitting there. In my brothers case, he had to replace the blower motor resistor pack and then he had to change the motor actuator not long after that. Was in my mother's car when I realized I had to charge my phone, only to find she had no phone chargers in her car. Cory, not enough to go on. Steve Knickerbocker: First, make sure you have a thermostat and you're not low on coolant. This is a very common problem and easy to fix. I'm wondering if a solution ever came about with the blower not coming on right away. Can you tell me what to tell them in order to get this fixed? Your car has an automatic temperature control system and it. Like the title says, my car will just crank and wont turn over and actually start. Or it also seems like it works when i hit a big bump? You need a new blower motor. usually when the resistor goes,it will only work on high speed or 1 or 2 speeds only. This is the same unit we had to replace the compressor in. I removed the controls on the dash. i have gotten it down to about 3 hours start to finish. Imagine you are driving on a hot summer day but suddenly your car starts overheating and you can't use the AC. My point is that Nissan went the cheap route on too many things. I took the cover off I see that the blower motor itself is a ways away from where I hit the dash. At times it will come on as soon as I crank engine, at times it will not come on at all. I've done a bit a searching but no one seemed to have a similar problem. Seeing your advice here, I went and cranked the car and left the AC running, and slammed the passenger door. It would sometimes work after hitting a bump in the road. it only works when the engine is started. The most common symptom of a failed blower motor resistor is when the heater fan only runs at the highest speed setting (4 or 5) and doesn't work at low speeds. Check for open circuit voltage at the blower motor connector while unplugged, should. It is the same repair on Colorado's and GMC Canyons. The contact stated that the blower motor failed to operate on settings 1-3 and would only work on setting 4. If the fan is not working I can hit under the passanger side dash and it will start working. 2004 Chrysler Sebring. This repair is also for Crown Victoria and Town Car applications. I'm not entirely clear about your description of the problem. My switch in my car works very well, but the air would not blow out at all as I switch till high to low, before it broke my ac can only work on high or I had to drive just for my ac can kick in real good but I drive 1999 Saturn SL2 !. This is the most common failure mode. The most recently reported issues are listed below. Other times it doesn't, no matter which speed or setting I have it on. In, fact, this occurrence happened to him not once, not twice, but. Usually you will only get a small amount of air blowing. If that does not work, I would check the fuses second, then check the dash control switch next. one minute it works fine as long as its working when the truck was started. My a/c blower works only sometimes. Sometimes the fan is still blowing but the air isn't warm anymore. Blower came on magically lol. A new problem started yesterday(97 B4 sedan). When I went to install the blower motor, the squirl cage fan, won't fit through my firewall. I purchased a new box assembly and blower motor through Car Parts Discount. I need help here. In most cases, a blower motor resistor fails due to corrosion or overheating. Is there a fuse for only the blower? Any ideas before I take it off ? Tnx,. Not sure if this is a problem with the blower fan itself or the climate control unit. The most common cause of a heater and air conditioner blower not working on a car is a faulty blower motor. I just had my air conditioner replaced. My truck's heat would only work while I was driving, then stopped working altogether while the engine started to overheat. The car has to be waxed though, and slick to the touch, otherwise the blower won't be very effective at moving water. How much does a Heater Blower Fan replacement cost? The cost of replacing a heater blower fan depends on your car and what parts your car's manufacturer recommends using for the replacement. 16 Answers. We have several leaf blower options to make it convenient for everyone. This is a very common problem and easy to fix. Only time will tell how long this will correct the issue but it did save me $110 in parts that did not require to be changed. Broken motor: One of the biggest signs that the blower itself is broken, rather than the connecting parts, is when the heating and air-conditioning only works on one setting. Sometimes. It seems to work when it wants to but it does seem to stop cooling if I've been out driving a couple hours. Steve Knickerbocker: First, make sure you have a thermostat and you're not low on coolant. There are HVAC fuses at multiple locations. I find it to be the best method to eliminate spiderwebbing in the clear. This can sometimes jump start a weak blower motor. ahhh my car does this to. I have a Buick Regal 2000, and the A/C blower was working, once in while stopped working for a few minutes,then restart by itself, lately was failing more often, while driving I played with the control speed knob and reastat and since last week stopped working I have played with the control know without success, I replaced the resistor. It seemed like when I would wash the car at the local auto wash is when it would quit but it would always come back on after an hour or so. What could be the cause? is it the blower motor itself?. A problem with the switch which turns the fan on or off, might also be the source of the problem. Or not if your car heaters are not working. JP993 is a self-confessed car and motorcycle addict, having saved thousands over the years working on and maintaining his vehicles himself. If there are questions related to "Low Air Flow From AC Vents - Auto Repair Tips and Tools" that weren't covered, feel free to ask your question below - only truly relevant questions will be published. Q: Heater only works sometimes which then uses this warm coolant to heat the inside of the car with the help of the blower motor that blows the warm air. About a month ago, my blower stopped working on certain speeds, then it quit working all together. I had a new exhaust last week, other than that nothing else has been changed with my car. When it does work, and I stop the engine and pull ou. For some reason when I removed and probed the connector in the back, it made a connection and started working. Is there a fuse for only the blower? Any ideas before I take it off ? Tnx,. You car's power windows can malfunction for a number or reasons. Steve Knickerbocker: First, make sure you have a thermostat and you're not low on coolant. You shouldn't have to go looking for simple solutions when you buy a new car. It never works on any speed setting. I took the cover off I see that the blower motor itself is a ways away from where I hit the dash. I put the heater box assembly in with only minor dificulty. When it does come on the fan speeds work so that makes me think it's not the FSU or the control unit. Imagine you are driving on a hot summer day but suddenly your car starts overheating and you can't use the AC. When The Blower Does Not Work The Rear Window Defogger And The Cruise Control Also Do Not. Check the fuses next to the glove box that are for the blower and heat control unit. My neighbors 01 Dodge Dakota pickup truck was having an HVAC blower motor issue. as in the blower motor does not even run, or nothing as in no heat? it was a cinch to fix the Accord after I had the A/C. The next day they get in the car and suddenly it works fine. Off and on. So my issue is most definitely NOT the computer control module. The blower motor power transistor is commonly referred to as the blower motor resistor when in the true technical sense it isn't a resistor. My blower has been acting up lately (2003), sometimes giving me half the air flow, and today it just crapped completely. My point is that Nissan went the cheap route on too many things. At times it will come on as soon as I crank engine, at times it will not come on at all. 16 Answers. A few months in the past I set a new air compressor in my auto. Now, it doesn't work at all (if it does work - it's very random when it kicks on) and doesn't blow any air - cold air or even hot. Also, if I turn on the heat, I get nothing either. Usually you will only get a small amount of air blowing. On my new motor, I had black, red, blue, and yellow. About 45 minutes after it turned off the blower came back and it was working normally. I borrow my sisters prius to swap out some parts like the ac control mudule, blower motor contol, & some relays. The remote central locking thing on my car key does not alway lock or unlock the car. Car ac blower motor stopped working on settings 123 a year ago, only works on setting 4 all of a sudden is only blowing cold now for 5 maybe 10 mins , I knew eventual I would have to replace motor but sometimes bigger issues come first as we all know, I've done my research although I'm no mechanic so no leaks no foul smells no debree an freon is full also I just replaced ac belt , the blower. This happens sporadically, but sometimes it works perfectly The most recent problem has happened twice in the last week - The fan/blower will not turn on at all, but after i get to wherever I was going and restart the car it will work fine. It's a shame that this blower is bundled with a P103 "Compact" Lithium Ion battery. Mostly "low-boy" oil furnaces, especially older models. It never works while driving, it never works when turning the key to start->on. Eventually the fan stopped completely, so I replace the fan relay. How can I fix this? This is a very common problem with this car. But there’s a chance the orange wire is actually the common wire and the yellow is one of the two med settings (med hi or med lo). But if your car's heater suddenly stops working in the middle of winter, it can make it downright miserable. I'm wondering if a solution ever came about with the blower not coming on right away. A common problem behind an air conditioner blower not starting includes overheating, which keeps the motor from running. I have an 08 Elantra. I replaced the fuse, and it blew again, so I went and got a new resistor. Adding Freon to Car AC – Gauge Readings Explained. Hello, The settings on my car there is no air blowing out of my vents either it is on AC or Heat, when the setting is at High the air is working fine. Step one would be to check fuses. If I start out my trip the blower fan is working fine. My daughter is having trouble with the Electric Windows of her 1992/1993 Nissan Sunny 1. Sometimes it works right away, sometimes I have to press it dozens of times before it works, sometimes it never works at all. She will have the blower motor running and it will just quit, then cycle back on again maybe a moment or two later. Replacing it is an easy fix. Seeing your advice here, I went and cranked the car and left the AC running, and slammed the passenger door. Blower motor works only sometimes. However,when I push the A/C switch in,I can hear the compressor kick in when I turn the fan speed 1-4,and I hear it disengage when I turn fan off. There is no battery to operate the blower. The blower on a furnace will also continue to run if its filter is extremely clogged. 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. It will be set to 71 and will be reading 76. Blower Fan Works on High Only. The heater blower stopped working. I paid out a lot of money for the air conditioner work, only to have the heater not working all of a sudden. i have a vauxhall astra year 2000 my problem is my heater only works intermittently when you first get in the car the heater works fine but if you stop and turn off the engine say to go shopping when you get back in the car the heater will not work but sometimes will restart working maybe half on hour later don't think its a loose wire any ideas is it something i could fix myself or would. Sometimes the motor will quit running for up to a minute. I have a 1994 Honda Accord and the ac in my car does not work. If your car temp gauge is working and the car is heating up fine and the blower works then it is most likely your heater core. Couple of days later my wife driven the car and the blower started working, that is good news, but after shutting off the engine and removing the key the blower is still on. Hello, The settings on my car there is no air blowing out of my vents either it is on AC or Heat, when the setting is at High the air is working fine. It doesn't appear to matter which blower speed setting it is on. the only way to get it to work again is to restart the vehicle. However,when I push the A/C switch in,I can hear the compressor kick in when I turn the fan speed 1-4,and I hear it disengage when I turn fan off. I just had my air conditioner replaced. To determine the cause of a blower fan failure, isolate the motor, and perform some basic electrical tests. Is there a way to test the resistor or do we just change it out and hope it works. What job? Vary the blower motor fan speed. When a blower resistor fails, the highest fan speed usually is the only one that still works because it essentially bypasses the resistor and receives the maximum amount of voltage. If the blower fan does not work on settings 1 and 2 but does work on settings 3 and 4 How do you know if the Why does my 1991 Lincoln Town Car's AC and heater work at either full blast or. Hi All I hope someone can help, unfortunately I bought a 2002 xsara Picasso 2. Seeing your advice here, I went and cranked the car and left the AC running, and slammed the passenger door. I had someone come out and all he said was wrong was the cut out connecting my duct work was not big enough. Please also check out the statistics and reliability analysis of the 2002 Jeep Grand Cherokee based on all problems reported for the 2002 Grand Cherokee. and she just drove it home from work which takes about an hour. at Napa only thing is it s a big pain in the butt getting to unless you remove the lower section of dash. However, most car makers bypass the blower motor resistor completely when you move the fan speed switch to high. Proper care and maintenance will keep your unit in good condition. If you take a look at the blower section of your heating system it is quite easy to see if you have a belt driven blower motor. If the blower motor is hot I would see if you can spin the squirrel cage (blower wheel) freely. I have a 1996 4. If that works, you need a new blower motor. Some Blower Motor Fan Speeds Not Working This one has been a big issue over the years. I drove to work this morning and everything started and ran completely fine to my knowledge. Now its kaput. A month ago my fan would intermittently quit working. With my limited electrical experience i used a volt meter and on days the blower worked the power to the connector that plugs into the blower had power varying as I adjusted the fan speed knob and on days it did not. size of the brushes and if they are about 0. I have a 1998 Forester and it has been great. Off and on. I have a 95 Chevy. Why is my car air conditioner not blowing cold air. changing heater cores in foxes are pretty easy,of course i have done about 6 of them in different cars so it may be easy to me. I plugged both the new module and my old module into his truck and it works fine. My car will only start producing hot air when I floor my car and only sometimes when I'm just sitting there. Sometimes the the AC would work and sometimes it wouldn't. Now, it doesn't work at all (if it does work - it's very random when it kicks on) and doesn't blow any air - cold air or even hot. It started out sometimes coming on and sometimes not. Other times it doesn't, no matter which speed or setting I have it on. I have 2007 Civic 4dr with an A/C blower motor that works only part of the time. It never works on any speed setting. at Napa only thing is it s a big pain in the butt getting to unless you remove the lower section of dash. blower motor - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. The contact mentioned that a burning odor emitted into the cabin. I plugged both the new module and my old module into his truck and it works fine. A wiring diagram for the specific vehicle is also helpful. So if your car’s heater only blows cold air out the vents, read the following car repair article to gain a better understanding on how the heater system works and how to make it blow hot again. Checked for incoming resistance ground to the blower, from the dash control switch and it works. That is one unit and is a printed circuit. My front blower is intermittent, too. This will quickly cause the A/C unit to only expel hot air. When it works, it continues to work as long as the car is running. I plugged both the new module and my old module into his truck and it works fine. I turned the fan knob to max and still nothing. I borrow my sisters prius to swap out some parts like the ac control mudule, blower motor contol, & some relays. Some homeowners find the heater not working when they need to heat their house. Comments: I had my 2001 325i E-46 parked for a 1 ½ month outside, when I restarted the car the blower wasn't working in any setting. Why Your Car Key Is Not Working. My fan indicator shows the fan working at the proper speed, but no air is coming out. But most of the time, it only blows cold air on High If I try to switch the control to Medium High, Medium Low or Low, it doesn't work at all. Some Blower Motor Fan Speeds Not Working This one has been a big issue over the years. On my new motor, I had black, red, blue, and yellow. If your blower only operates on its highest speed, chances are you have the series type of blower motor resistor. My car has only over heated once and that was last year, it did needed anti freeze but this year my car's heater doesn't work but it does blow air but not hot air. It like the fan is broke. Related Car Repair Articles and Products. JP993 is a self-confessed car and motorcycle addict, having saved thousands over the years working on and maintaining his vehicles himself. The most recently reported issues are listed below. When the weather is cool it works fine. Some Blower Motor Fan Speeds Not Working This one has been a big issue over the years. Everybody thinks it's easy to do A/C work but when it only works for a short time, it's an indication that they did not know what they were doing and misdiagnosed the repair. Followed the links and managed to extract the FSR, and through other links took out the black rubbery gunge on top and resoldered the faulty joints. Dodge blower resistor and connector kit. My car has only over heated once and that was last year, it did needed anti freeze but this year my car's heater doesn't work but it does blow air but not hot air. One has to do with the car stereo turning on and working just fine, but the music intermittently cuts out, or the stereo randomly shuts itself off. It seems to work when it wants to but it does seem to stop cooling if I've been out driving a couple hours. Sent from my HTC One_M8 using Tapatalk. Especially if is one of those days where putting down the windows just won't cut it and help cool it off. If the fan operates at some speed settings, but doesn't work at some other speed settings, this means that the blower resistor is faulty and should be replaced: Find the blower resistor and detach it from the rest of the circuit. 0 HDI off Ebay yesterday {and I put those details in the subject header today because someone ignored the requests to do so!} , the guy told me the heater blower does not work (but it will only be the fuse), I have also realised that the A. To clarify, the rear blower always works. Penetrating fluid and some oil, good as new. I had the same issue, one extra wire. Sometimes, as with fuses, the break is not easy to detect visually. Also, if I turn on the heat, I get nothing either. My point is that Nissan went the cheap route on too many things. I checked the fuse, and it was blown. The key is to clay bar and use quality car care productsI use Zaino. It was intermittently working, (rarely), but when it did it was on all speeds. The thermostat is only a few months old with a brand new engine all fluids are new as well. Blower motor works only sometimes. When the weather is cool it works fine. When it does come on the fan speeds work so that makes me think it's not the FSU or the control unit. I have a 1994 Honda Accord and the ac in my car does not work. unplug it,look to see if connector is maybe melted/burnt. Sometimes it works right away, sometimes I have to press it dozens of times before it works, sometimes it never works at all. as far as heater not working,did you plug the blower motor resister back in?you can also lift the flap on the passenger side of the heater box and stick a screwdriver in and spin the squirl cage and see if it is. I turned my car off and let it set for about 5 minutes (coincidental, not because I was troubleshooting). In most cases, a blower motor resistor fails due to corrosion or overheating. To determine the cause of a blower fan failure, isolate the motor, and perform some basic electrical tests. Citroen Xsara Picasso (2000 - 2010) - 2002 2. Leaves in your yard sometimes look bad. It's a shame that this blower is bundled with a P103 "Compact" Lithium Ion battery. On my new motor, I had black, red, blue, and yellow. When I turn my a/c on it blows hot air and the fans don't run. My blower motor only comes on when I hit bumps and will not turn on otherwise. I've tried it at various distances and this does not seem to make a difference. The air is nice and hot when it does come out, but I get no response until I turn it all t…. Why Is My Heater Not Working? A car heater that isn't working could be caused by several simple issues. at Napa only thing is it s a big pain in the butt getting to unless you remove the lower section of dash. Why does my air conditioner only work sometimes (intermittently) in my 2000 Toyota Tacoma PreRunner? It stopped working last summer and a few days later it was cooling again. Well its cold/rainy and I finally decide to take it out for a good 20 min drive (NO plate/tags/insurance cant go far) Took me a good 5 mins to figure out how to get the windshield wipers workin , So then the windows start foggin up since its 35 degree's outside. I have a 1998 Forester and it has been great. Not sure what happend , but it nows works. Hello all, I have a 2015 Versa 1. you don't have a heater in your car like you do your home. When you say front doesn't work when back does, did you mean but instead?. i have gotten it down to about 3 hours start to finish. It was just the heater Blower relay on my car. I've noticed that generally on the second or third try (say half an hour) it starts and often keep on cooling very well. If I would flip the switch on the air intake from inside the car to outside air it would sometimes restart. In most cases, a blower motor resistor fails due to corrosion or overheating. Sometimes. Sometimes a stalled condenser coil can cause your unit to not blow cool air. You have power to the switch, vent controls are working, rear de-ice is working, but blower is completely dead. It blows a little bit of air, but nothing cold or with any force. When a blower resistor fails, the highest fan speed usually is the only one that still works because it essentially bypasses the resistor and receives the maximum amount of voltage. So really the fact is that I only paid $17 for this and it's good enough that it's not worth sending back. when I start the jimmy the heat works sometimes. It's not a particularly hard thing to do so just fix it as required. Check the fuses next to the glove box that are for the blower and heat control unit. Imagine you are driving on a hot summer day but suddenly your car starts overheating and you can’t use the AC. I may not drive. But when it's on 1/2/ or 3 I hear the motor working, but there is no air blowing. at Napa only thing is it s a big pain in the butt getting to unless you remove the lower section of dash. My neighbors 01 Dodge Dakota pickup truck was having an HVAC blower motor issue. 2006 Grand Caravan Blower Won't Work as my husband has NO car experience at all, and we needed what is called an EXPLODED VIEW OF THE BLOWER MOTOR POSITION. All power to every one of the electrical working parts of the car is supplied via fuses. When it does work the fan does work on all speeds. My a/c blower works only sometimes. Chevrolet Silverado 2007-2013: Why Won't My Blower Work? Nothing is more upsetting than when you need your A/C or heater, and it just won't work. 25" (6-7mm) square and less than 3/4" (19mm) long, these brushes should work. If I start out my trip the blower fan is working fine. That is one unit and is a printed circuit. They work by. Without the blower motor, the system is unable to push air through the vents inside the vehicle. changing heater cores in foxes are pretty easy,of course i have done about 6 of them in different cars so it may be easy to me. The blower motor appears to work, but refuses to work on occasion. Now that we have brushed over some of the differences in car keys, let's dive right into some of the reasons why your car key might not be working. the only way to get it to work again is to restart the vehicle. Here are instructions.