Passat (B6) :: 2008 - Foul Odor Emanating From HVAC System
Oct 12, 2008
My 08 B6 wagon has a very foul odor emanating from the HVAC system. It started after my wife washed the windshield with vinegar to get rid of some scaling from the bizarre water we have here. She thought the smell was from some of the vinegar running off the windshield. Well, that was several months ago and the smell is no better. Just recently, the temps have been down enough to turn off the AC switch and the smell is even worse.
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I bought a New Toyota Camry in November of 2012. It is a 2012 model. Since we bought the car in November we rarely ran the AC. Well summer is in , and we recently began running the AC on a daily basis. About a month ago we began having a foul/musty odor coming out of the AC. We brought it to the dealer twice.
The second time we brought it back, the dealer told me that they believe the problem is my dogs.Because there was a very minimal amount of hair on the seat covers. Rat terrier and jack Russel. They are white and I noticed the hair thing after the first ride with us. So they do not ride in the car anymore. What upsets me the most is the fact the dealer wants to charge me to take the AC apart and clean it.
Told me the only reason they could account for the odor is pet dander. They did flush the ac through the drain hole and installed a charcoal filter. Same thing it lasted about 1 week. Is there a simple resolution to this? I am at wits end. Because it has under 10 K miles, I do not feel I should have to run the heater or do anything to get rid of the odor. It is hot enough here in Fl.
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I know this has been covered many times before but I know how to remedy the problem. My question is that I have an 09 which is still under warranty, is replacing the cabin filter/charcoal filter due to bacterial odor covered under my bumper to bumper warranty? I found some posts where people said it was but I want to double check before i waste time that I don't have with the dealer since I've been really busy with school.
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My 2003 Passat has a musty smell coming from the HVAC system that just won't go away. Have resealed pollen filter and had airsept treatment (this worked for a while, but now the smell is worse than ever). Two dealers have tried (and failed) to fix this. It's so bad I can't take passengers in the car.
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2014 TDI Passat with 66k miles. No unusual problems until this point. Three days ago I began to notice a strong ammonia odor coming through the ac vents. Its become significantly worse over the last 24 hours. The vaporized ammonia is sufficiently concentrated to cause eye and nasal irritation. It occurs rapidly, within 30 seconds of turning on the recirc mode. Turning off the recirc mode can clear the cabin quite fast as well. There is no odor or leak perceptible in the engine compartment, under the car, or in the trunk space.
No check engine warning or alarm that there is a problem with the DEF system. DEF fluid container was last topped off about 5k miles ago. Clearly, this is a significant failure of the emission system. I've done a cursory search but have not seen this exact problem written up before. Wondering why a car would be designed with the HVAC close to the to the exhaust/emissions system that it could capture gasses intended for the exhaust system? Its not so much the ammonia I/m worried about as the odorless and toxic Nox gasses the emission system should be reducing. getting dropped off at the dealer tomorrow.
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I noticed this weekend the vents in my 080camry have a foul musty smell coming from them, what this could be.
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in my 2008 ford Ranger Sport with a V6. The smell reminds me of one winter when I had stepped in dog and didn't know it until I was four miles down the road and the heater was on full blast. The smell floods the cabin when the heater is first turned on and warms up, but dissipates after a while. (And I don't have dog on the floor boards or on my boots.)
The smell does not come out the AC vents or when the AC was operated this past summer.
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The water was not actually getting into the HVAC itself, but getting past the air inlet assembly from under the leaf screen directly into the firewall area. I will try a gasket maker that comes in rolls that I can press into place. there is no room for tools there.
Everywhere around the heater and AC module is dry. The foam on the inside firewall immediately under the air inlet assembly is soaked, yet the inside of the assembly is bone dry. I removed the entire to diagnose the leak. A light rain was enough to fill the back foot well with an inch of water.
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I have a 2013 Camry SE that is, out of the blue, not blowing any air from the HVAC system. I checked the 2 A/C fuses any they are ok. The lights light up on the control panel like normal and the rear window defogger works correctly, so I don't think it's the control panel. I can't find any fuses or relays relayed to the blower motor in either fuse box.
What else should I check? The car is still under warranty (for a month!) but if it's a cheap and easy fix, I'd rather save the hassle of giving it to the dealer for a day and fix it myself.
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Our 2002 Camry SE V6 incurs a burning odor through the HVAC system after braking from moderate or higher speeds (at low speeds, this does not happen). It can last for a few seconds or a few minutes and then goes away (it does not happen while in motion). I cannot smell anything outside the car.
The car was inspected & serviced two months ago with no issues found. The front valve cover was replaced about a year ago but the back valve cover was OK to leave as is.
I would want to say it is the brakes or the snow tires causing the odor but it is strange it only smells inside the car.
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I drove about 25 mi today, made a brief stop and then continued home. On the return trip, the system would not blow any air in any mode at all. While driving, I cycled it through various modes and it would not do a damn thing. Later in the day I started up and it worked fine... What might cause that to occur?
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I have a 2015 Prius. when I operate the ventilation system without using the AC, and the air on by-pass I get a rear bad smell. With 6500 mile I should not be needing to spray disinfectants etc into the ac system.
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Two related problems:
1) Our 2008 dodge grand caravan's recycled cabin air/exterior air flipper is broken. You know, makes the clicking clunking sound until it gives up?
2) Unfortunately this has made the exhaust smell that much worse.
Usually when you drive above 35mph you don't catch engine fumes, but when its anything less you fear you're poisoning your family into early cancer. Obviously we have a leak in the HVAC system somewhere and anytime we take it somewhere for service on something else they just shrug their shoulders.
How to locate the leak so I can keep the engine compartment out of our a/c?
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I was just wondering where the interior temperature sensor of the hvac system is located?
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Experienced the problem of a flashing defrost button and the entire HVAC system "frozen"? All the other buttons become useless while the defrost button is flashing on and off. If I then hold either the a/c button or the auto button, the system starts up at 75 degrees with the air running. I can then adjust to where I want it to be.
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I was recently on a trip pulling my 32' Travel Trailer, and out of the Hvac system started blowing scalding hot air and soot and smoke into the cab. I pulled over to check things out and could find nothing wrong. When the turbo kicks in it blows even hotter. I could find nothing wrong at the time. As I got back on the road again it started again a few miles down the road.
I made it home and started checking things out. Around the dash, airbag, glove box, on the window , headliner and carpeting, is covered in soot and smoke. the computer is now telling me that ALL the doors are ajar, power locks and key fob do not work, 3/4 of the window switches do not work and 1 window does not work now. I removed the glove box and the panel underneath it to look at the HVAC system.
What I saw about made me cry. The Plastic that houses the HVAC system had started melting and the HVAC hoses have melted. I have still not found the reason for any of this to happen. Also when I got the truck a year ago the Turbo would spool up around 1800 to 2000 RPM. Now it does not spool up until around 3000 to 3250 RPM.
HVAC system and hose
HVAC system housing
Glove Box and Vent
Air bag and Vent
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2008 F-150, King Ranch. 5.4 ... After installing new Blend door and actuator. Then running diagnosis along with reset. The blend door works and moves but the code won't reset. Door closes tight and air gets hot when raising EATC temp control. I have run the reset and checked the code several times. Just keeps coming up with a 22 and 66. Also, This pickup has a brand new AC system and it doesn't cool for anything. 55F. after ambient temp crosses 90F.
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So I just picked up a 08 STL. I noticed that it doesn't get a lot of airflow out of the vents or floor. I initially thought that it was door actuators. I checked the vacuum at all of them and they all cycled as required.
I also checked the blend door, and the fresh air doors as well. They all cycled as desired. When I was checking my fresh air door with the borescope, I noticed a layer of... insulation maybe? on top of the inlet for the blower. So I removed the blower, and the picture below is looking up into the housing. Is that supposed to be there? It appears extremely dense, so I am led to believe that's what is causing my flow issues.
If it does not belong, how to remove it? Where is the fresh air inlet on this thing?
Full size : [URL] .....
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Had a bad smell coming from the a/c vents when you first turn it on. Goes away after a couple minutes but it stinks... My passat still under warranty, wanna be able to tell them what's wrong when I take it in.
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Yesterday, my wife said she tried to turn the fan control knob from 2 to 3, but there was some resistance. She turned it off, and when she tried to turn it back on, nothing happened. The fan control knob turns as it should, but no fan is blowing, and therefore, no AC. Also, we noticed after dark that the lights inside the HVAC control unit had also died. I was thinking fuse, but checked all fuses related to HVAC and dash lighting and they were all OK.
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Have a pulsing noise when the HVAC is turned on (see other post about HVAC pulsing noise etc). I've traced the sound to behind the glove box, I suspect near where the cabin air filter is. I believe the blower motor is back there too? How to remove glove box to get to blower assembly...
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