Aurora :: Blower Goes On And Off Randomly Whether On AC Or Heat
Oct 24, 2011
I have a 97 Aurora and I have had no other electrical or major issues with the car. However randomly the blower goes on and off. It does it on all the settings, and whether it is on AC or heat. It is really starting to bug me but its almost time to put it away for the winter and I would like to have it ready for "constant" cold AC this spring. I have tried tapping on the motor and it makes no difference. The temp flashes on the climate control all the time but it has always done this. What the random on/off issue could be? It is not throwing any body codes, just the usual o2 sensor in the engine.
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My R stopped blowing any air. I can just barely feel warmth coming from the vents, but blower is not working... I looked for some threads on this but nothing.
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I own 01 Prius with 223K miles, No heat or AC working. Only get outside air. Here is the code I am getting: 3, 3, 4, 1, 4, 2, 4, 3.
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My 2007 Prius has stopped producing cabin heat; the blower fan is working. I have no dash warning indicators. I am in an area where the are no Toyota dealers and need to drive 160 miles to home and shop. It has just turned cold. Why and if I am ok to drive to the shop?
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I have a 2005 Escape Hybrid. Last summer, the A/C went out, so when in the fall I finally got around to having the cooling system flushed. Did the trick, and A/C works fine. Now that winter's come along, I've noticed an issue with the heat. All fan speeds work correctly, and the dash controls for heat and cold work properly. But what's odd is that I get plenty of heat when the vehicle is at speed, above about 30 mph. As soon as I slow down below that, or hit a red light, there's no heat. The blower just blows cold air until I am back up at speed again.
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A few weeks ago my battery died and I had to jump start my car. After the jump start, my heat wasn't working - no air will blow out on heat or A/C. I checked the fuses - all good.
I pulled the blower motor out and tested it and it worked hooked up to a battery. At one point when the blower motor was still in the car I banged it with a hammer and it turned on momentarily then shut off again.
Since the blower motor seemed to work outside of the car, I assumed it was the resistor that was bad. Replaced , and still no heat.
Could the blower motor be bad and just have worked hooked to a battery intermittently?
What else could it be?
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I'm headed north in a couple days to the frigid regions of the country and I little worried cause my blower fan is now completely non-functioning (no heat, no defrost ). It came on a couple times since I bought it recently, usually after hitting a bump and stayed on for a while, but now it hasn't come on at all in a while. I checked all the fuses, they all looked good.
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So, for a couple of weeks my g/f's Passat has had no heat. The blower fan runs and the AC works but the heat is non-existent. Fast forward to this morning and now all of a sudden her heat miraculously works again. The car has 170k miles on the clock and had the timing belt and water pump done around 120k miles. The thermostat I'm not too sure about. I don't know when (if ever) the system has had a coolant flush so I plan on doing that this weekend. Is it okay to use something other than the G12 VW originally put in it?
At first I thought maybe her heater core was clogged but if it is I don't understand why the heat would start working again. Any tutorial on how to flush this motor properly and how to access the heater core lines so I can try to clear it? On my car it's a piece of cake but her VW stumps me sometimes.
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I was wondering if there may perhaps be a more conventional approach to getting the blower fan motor for the AC/Heat in my 1990 Mazda to work consistently - other than whacking it with my hand or foot? Is there an easy fix for this?
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I have a 2008 Elantra w/ 108K miles. The current issue is the heat/ac blower intermittently not working. On Christmas Eve I started to drive it and realized the windshield was fogged up because blower was not working. The next day it worked fine...we chalked it up to maybe being related to having plugged a crock pot into the cigarette lighter (with a plug convertor thing)...wishful thinking that maybe something just got "overloaded." It has been working fine since, except last night when I started it, same thing--no air blowing on any of the settings (I read that if setting 4 works, but not 1-3, it makes a difference w/ the diagnosis). And, then again today...it works fine. Other things that I have noticed/that have happened in the past year or so (possibly unrelated, but figured it couldn't hurt to mention them just in case):
June 2013--started intermittently hearing a loud buzzing type sound (at first thought it was my phone vibrating)...sometimes would happen randomly, but mostly when I would adjust the heat/ac...sound coming from the passenger side front of the car floor area (maybe under glove box where I know the blower motor is). The buzzing would last anywhere from 2-20 seconds. Never did anything about it since everything was working fine...
Last winter--while driving home during a heavy snow storm w/ defrost on high and windshield wipers going noticed that the fan/blower seemed to "surge" when I stepped on the gas..like the blower would slow down when I braked and blast out much more air louder when I accelerated. I noticed this again tonight...possibly it has been ongoing and I just have not noticed.
Early Dec 2014-present--unable to adjust the temp setting...despite twisting the knob from red to blue, it remained hot air. Assumed it's the blend door, but figured we'd deal w/ it in the spring when I needed cold air again!
What this could be (or an overall problem that would explain all the problems?).
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I have a 2008 Prius. The blower for the AC and heat stopped working. I have checked the two AC fuses and they are okay. I used the touch screen diagnostics mode on the touch screen and it appears that the touch screen and the screen switches are working. Any other things to check?
How hard is it to access the blower motor to replace or to check if it is getting power? How much of the dash has to be disassembled?
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I have a 2008 Prius and have been having problems with the a/c blower just cutting out randomly and then coming back on equally as randomly. I can hear the relay click when I turn the fan on and off, but nothing coming out of the vents.
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Problem solved- update! Found a main vacuum line, (white one), broken right above where the oil filler tube is. I guess if the plenum door is not in the proper position, it screws with the fan? Works like a champ now even with 442,000 miles on this van! --- 1997 aerostar, 3.0. Doesn't matter what I'm using, vent, heater, or AC. When I have the fan switch "on", The fan will shut off, then turn back on whenever it feels like. I've tried turning the controls on and off in any and all ways, and still random fan goes on-off when it's turned on. Is there a sensor somewhere that could cause this? Or what?
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Have an 05 Limited Excursion v10 where the front blower motor will cut out randomly. The rear blower will work without issue even when the front is not working. When the front is working (98% of the time) all speeds seem to work and can adjust to all heating/cooling positions. After searching the forum I thought the likely culprit was the blower motor; which I replaced this pass weekend but coming home from work it cut off again, clearly the issue is not resolved. I know the ford resistor are known to be prone to issues but symptoms do not seem to point that direction. Also it is does not happen with any consistency, happens at idle just as frequently as the expressway. What else to check and how to check before I have to give in and take to dealership...
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There used to be a audible pop in my stereo speaker when my heat would kick on. Now there is not. My heat did this last winter around the same time. I checked Fuses. The blower blows, but it just blows cold air. It could be a thermostat, or a clogged heater core. 1997 Ford Ranger 2.3L ...
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2003 F150 4wd with auto climate control. My blower for heat and AC completely stopped working a few weeks ago. I have checked all fuses, i replaced the relay under the dash, i replaced the blower motor control module. I supplied power to the blower motor itself and it ran fine with no noises. I ran the self test on the controller in the dash under the radio and it passed. I am not sure what else to try.
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I found no heat last week in my 01 F150. The AC was cold but no blower. The heat was there but no blower. I replaced the blower motor resistor. Result: i believe a FEW of the speeds worked when turning the fan speed switch...but was intermittent. It would blow L, M, H, then nothing. I jiggled the know on the dash mounted switch and heard it on/off, on/off the motor as I jiggled. I DID notice that when I disco'd the connector off the resistor the HIGH speed worked. Is the switch on the dash perhaps crusty ? Or should I be looknig at the motor itself.
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On my first trip with the new Santa Fe. After 400 miles today, while just 50 miles from Vegas, the A/C blower quit working. It sounded like it was blowing as normal but almost no air was coming from the vents. Being just 50 miles out I pushed on.
After arriving home (only 98 today luckily) I turned off the car and unloaded. After about 20 minutes, I started the car and the A/C and blower seemed fine. I looked at the ground and about a pint of water (at least it looked and felt like water I did not taste it) seemed to leak after I started it from the center of the car about even with the front door. What happened? Any cause for alarm?
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Started up the 2002 EXP today and thought the fuel pump was failing. Get a consistent thump every 1 second. Later today i looked and noted the noise is coming from drivers rear fender well (i think). I took off the small plastic cover of the rear blower motor and thought it was in that area. Disconnected the motor and still thumps. Disconnected the blower motor resistor block and still thumps. Looked at the overhead consol and the rear blower was on HI. Turned the blower down and as you reduce speed the noise volume is lower. Turned the switch off and i thought the noise was gone. Pulled the cup holder above the fender well looking for a relay or something in that area. I cant isolate the noise but seems to be real close to that area. Later i heard the noise, very faint, and the blower switch was off. Turned it to 1-2-3 and it gets much louder. Turned it off and very slight noise. What am i looking for? My hearing is not accurate enough to find it.
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with a new heater core, new blower motor, and new resistor and no heat, what would be the problem? gonna check the thermostat tomorrow.
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Recently got a 2003 f 250 6.0 that has had a little work done on it. Absolutely love it with 1 exception. When I turn on the ac or heat It blows a 10 amp fuse that goes to the blower relay. It was occasionally now it's all the time.Blower ok, fan speed resistor ok. What or where to look.
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