HVAC - Heating, Ventilation, Air Conditioning.

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1answer
218 views

2008 Chevrolet Impala. Clicking noise behind the glove box - I believe it has something to do with a diverter valve in heating and cooling system?

There is a clicking noise behind the glove box. I believe there should be a sensor or something to stop the motor for the divertor valve. It trys to keep shifting the valve and it clicks when it ...
2
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1answer
123 views

Can you use a vacuum pump on a charged A/C System?

I have a vehicle that is not currently running from which I am pulling the engine. To do so, I need to remove the A/C compressor and condensor, but it is currently charged. I have borrowed an A/C ...
4
votes
1answer
1k views

Why might lower settings of a dashboard fan not work if the highest does?

My wife bought a Nissan Note second hand and the internal ventilation fan works on the highest setting (3 or 4) but not on the lower settings. We've checked the fuses and all seems fine there. Could ...
2
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1answer
505 views

2011 Grand Caravan only blows hot air to the rear and passenger

I bought a 2011 Grand Caravan last November, maybe that was my mistake, buying in the winter. It has the dual climate control (one driver, one passenger) and a rear control as well. Fast forward to ...
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1answer
1k views

My 2007 Jeep Commander is blowing hot air into the cabin even though the temperature is set to cool

Even if I have the fan set to off and the temperature dial set all the way to cold, extremely hot air is coming from my vents into the cabin. It seems to get worse at higher speeds. If I turn the ...
2
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1answer
35 views

No airflow on any driver side vents

1993 Oldsmobile 98 Regency Elite. Hello, I have an odd problem where the driver side vents have almost no airflow coming out of them. This is for all positions, so no combination of ...
4
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2answers
486 views

Defogger won't work in 2008 Chrysler 300

As winter is now here a functional defogger is a requirement yet this year my car won't defog no matter what I try. All vents in the car are functional and blow whatever is pumped through them (eg I ...
2
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2answers
413 views

2007 Ford Ranger no heat

My 2007 Ford Ranger has no heat when I turn it on, but the COLD A/C works beautifully? All of the sudden the heat stopped working. It doesn't get humid or tepid at all, just no heat. What can I look ...
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3answers
3k views

When car is standing still, I smell Diesel exhaust. Why?

In my 2003 Opel Vectra, the cabin air smells of Diesel exhaust while stopped at e.g. a red light. The exhaust smell goes away when driving, and it also doesn't come back if I turn the ventilation off ...
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3answers
5k views

What do I risk if I don't fix my leaking evaporator core on my 2004 Jeep GC?

The shop just tested my non-working AC, and recharged the freon - so, for now, it's working. Cost $118 all in. However, they tell me I have a leak in my evaporator core, and that it will take 16 ...
4
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1answer
330 views

Vauxhall Vectra C Blower Motor Sqealing / Clunking

I have just replaced my Blower Motor Resistor as my fan wouldn't work on any setting other than 4 (in line with a previous post: How to troubleshoot a fan that won't work unless it's on ...
4
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1answer
551 views

How to troubleshoot a fan that won't work unless it's on it's on the highest setting?

My car fan won't work unless it's on 4 (full power). I have 4 options of power for the fan 1 - 4 but nothing happens on options 1 - 3. I have taken the panel off and cleaned all the contacts for the ...
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3answers
549 views

my ford focus 2009 has a lot of vibration when the A/C is off?

Most of the time cars vibrate when you turn the A/C on, but mine is the other way around, when the AC is off the car has a lot of vibration, if I turn on the A/C it will stop vibrating, I already went ...
5
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1answer
171 views

What should I use to lubricate the flaps that controls the temperature and which vents the air comes out of?

The control shafts that move the flaps which control the the hot/cold air and which vents the air come out have broken. The car is a 1999 93 Saab so I'm assuming that the hinges (the flap has a peg ...
2
votes
1answer
119 views

What to check on HVAC after verifying blower motor works?

I drive an 2003 Acura TL. This week, the fan stopped blowing air, regardless of what setting the temperature / A/C is one. I pulled out the blower motor and connected a multimeter to it. The ...
1
vote
1answer
596 views

Blower resistor blowing on '02 Chrysler Voyager

We've got a 2002 Chrysler Voyager with something of an odd problem. The blower resistor likes to burn out. It's easy to replace, but after doing so, our vent speeds go out one by one, until all we ...
5
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2answers
935 views

Foul Smell when turning on air conditioning

I have a 2007 Chrysler Aspen, and recently (past 2 weeks) when I turn on the ac, I notice a 'foul' smell, like burnt rubber, or even sulphur-like. The smell will last a few minutes and will gradually ...
2
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2answers
850 views

Permanent fix to AC drain clogging in '94 Jeep Grand Cherokee?

For some time, my Jeep has had something leaking or draining into the carpet in the front-passenger floor space. My mechanic has told me that the AC drain keeps getting clogged by leaves and such, ...
2
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2answers
227 views

HVAC is not blowing. Is it most likely the blower motor?

I have a 1998 Buick Park Avenue (standard not ultra). Recently the heating and air stopped blowing. It acts normal in every other way (lights and indicators work as normal) but I am not getting any ...
3
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1answer
858 views

My AC works well at night only

I'm unhappy with the performance of my '04 Pontiac GTO's AC. Here are the symptoms: Cooling goes down to zero when the car is stationary, starts to cool after the car has been moving for some time ...
4
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2answers
1k views

My vents randomly switch between face / windshield… how do I fix this?

I have a 1998 Ford Windstar (more details on demand if necessary.) I rarely use any vent setting besides "face", and I try to avoid using AC because my gas mileage is already lousy. About two months ...
6
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2answers
482 views

how can I quiet a 'chirping' ventilation fan motor blade?

I have a 2006 VW Golf and the internal fan motor that blows the a/c & heat will start to 'chirp' (sound something like a bird singing) randomly. I believe the fan blade needs to be lubricated, ...