HVAC - Heating, Ventilation, Air Conditioning.

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5
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0answers
34 views

Hot air only flows to vents, not to defrost?

I have a 1995 VW Jetta GL, 2.0 engine, 5 speed, a/c. My heater won't switch between defrost, floor heat or vents. It's stuck on the vents and I can't seem to find out why. I have torn apart the ...
1
vote
0answers
22 views

Heater only Blowing cold air

I have a 1997 F150 4.2L engine. The engine warms to normal operating temp. Blower motor is fine. No matter what the AC/Heater control switch is turned to I only get cold air. Im thinking the switch ...
5
votes
2answers
41 views

How can I determine my HVAC layout?

Answers to Why does my A/C blow foul smelling air when it first turns on? suggest several fixes that depend on knowing where in the car they are located. I can't determine in any of my cars where the ...
3
votes
0answers
32 views

Saying its running hot but full of coolant and not over heating

2005 Hyundai Elantra. Says its running hot but has coolant and so far hasn't over heated and also can't turn on heat in car because smoke pours from vents into the inside of car.
2
votes
2answers
39 views

A foul odor inside vehicle, like something is dead inside vehicle (Toyota Camry 2002), especially when car is not running [duplicate]

Over the past 5 days, I detected a really bad foul odor inside my 2002 Toyota Camry. It is worst when the car sits overnight, or for any length of time. As soon as I open the car door, "the smell ...
3
votes
2answers
91 views

Can I retrofit heated side mirrors if it wasn't an option with the car?

Is it possible for me to add heated mirrors to my car, if it wasn't an option at all as standard? I would like to keep the mirrors standard. My mirrors on my 2003 Opel Agila are a really awkward ...
3
votes
1answer
42 views

How to stop car steaming up?

My 2003 Opel Agila always seems to steam up constantly while driving, in all weathers. I do not have a damp problem in the car either, everywhere seems dry. I have checked the following things: ...
1
vote
1answer
35 views

2008 ford escape hybrid blend door actuator

i have a similar issue, my 2008 ford escape hybrid driver side remains on cold and my passenger side climate control works fine, no problems. I also notice that when i turn the knob on the driver side ...
3
votes
0answers
57 views

2010 Volvo S80 - Cabin HVAC system schematics

Something in my sedan's cabin air system smells bad (organic bad, not mechanical bad), even after changing the cabin air filter. I have a bore scope, vacuum, compressor, and hoses sufficient that I ...
2
votes
2answers
58 views

How do I flush out bad smells in my air conditioning? [duplicate]

My car seems to have a pretty bad smell in the air conditioning. WHat is the best way to flush out these smells?
1
vote
2answers
90 views

HVAC blowing out of defroster and floor

1995 Chevy S-10 Blazer - 4.3 L Vortec V6 (vin W with PCM) - 230,000 miles original owner. I changed my IAC Valve today, and coincidentally, my HVAC started blowing out of the defroster and floor no ...
1
vote
2answers
167 views

Ford Explorer Weak Air Flow Defrost/Air Conditioning

My 2002 Ford Explorer developed a weak defrost late in the winter (I don't drive it all that much) and now in summer the air conditioning has a very weak air flow -- doesn't cool anything. I'm sure ...
3
votes
1answer
75 views

After replacing A/C Schrader valve and O-Ring, Do I need just refrigerant?

It looks like I lost all of the refrigerant due to a leaky schrader valve and O-ring. The A/C stopped cooling a few months ago, but I just got around to tracking down the problem. Do I need to flush ...
3
votes
1answer
46 views

Will I damage my heated rear windscreen if I leave it on?

My 2003 Opel Agila 1.2 does has an old mechanism where you pull out one of the heater controls and the heated rear window comes on, and it does not automatically turn off (by design) Will I damage ...
1
vote
2answers
44 views

AC leak best solution

I have a 2001 Honda civic. I recharged my ac with refrigerant but it only last about 3 days before the cold air stop blowing. I assume this would mean that the leak is pretty bad. Air is still blowing ...
2
votes
1answer
96 views

Which convenience features in a car affects fuel economy?

I understand that the A/C compressor runs with the engine belt, so it will always uses some HP when engaged, therefore it will have some effect on fuel consumption. What I want to know if there are ...
1
vote
0answers
339 views

Can a blend door be easily fixed/replaced in a Ford Escape Hybrid 2006? Also, passenger side airbag removal?

I recently got my AC compressor fixed, but after doing this it turns out my AC still isn't great because of a messed up blend door (according to my mechanic). Apparently this is a fairly common ...
1
vote
2answers
375 views

Where is the e46 AC drain hose located?

I've tried looking online, but I can't find a description and the images are too zoomed-in to tell exactly where the AC drain hose is. Another problem is that the hose might vary between generations. ...
2
votes
4answers
755 views

BMW e46 cabin air vent smells [duplicate]

The cabin vents smell like mold and mildew. It's worse during humid days. I'm pretty sure the AC has something to do with it (since it smells bad when I turn the AC off and keep the fans blowing) but ...
6
votes
2answers
43 views

1986 VW Westfalia van A/C

I had my AC refrigerant professionally changed to Red Tek in my van. It worked well for 2 or 3 years but then stopped cooling. I successfully refilled with difficulty and it was fine for a further ...
6
votes
3answers
3k views

AC blower won't turn on after replacing battery

I have a U.S. 2011 Volkswagen GTI. After the car wouldn't start (starter would crank but engine would not turn on) I decided it's probably time to replace the battery, and did. Car starts fine, but ...
3
votes
2answers
226 views

Horrible rotten feet smell from my 2013 chevy malibu ltz [duplicate]

I just purchased a 2013 Chevy Malibu LTZ and every time I turn on the air conditioner, there is this horrible odor of rotten feet that comes out of the vent. The longer I run it, the stronger it ...
8
votes
1answer
298 views

How to get items out of the HVAC system from a 2003-2007 Honda Accord

Before I ruin my dashboard/car, I wanted to know if my approach is correct. I don't know much about cars but logically, it seems like a simple enough task to remove vents, reach in and grab items, ...
2
votes
1answer
102 views

1999 Toyota RAV 4 Car Stops when AC is powered on after driving for a while

While driving my 1998/99 Toyota RAV 4 car for sometime with the Ac powered on, the engine goes off. Once i start the car, it responds and it does not stop at all when i off the AC, once AC is on , ...
2
votes
1answer
47 views

External air mode smells bad

My Hyundai Sonata 2008 smells sour, when the air ventilation is set to external rather than internal. I always immediately turn it to internal air to avoid the smell. Where is the ventilation ...
2
votes
1answer
268 views

My blower has stopped working with heater or a/c

I have a 2005 Chevy Silverado 1500 HD SL Crewcab. The blower has stopped working with the heater or a/c. I have checked all the fuses I can find in the owners guide and they are good, don't see and ...
1
vote
1answer
303 views

Mazda5 - any way to disable “recirculation off while in defrosting mode” feature?

I have Mazda5 2013, trying to fix an annoying issue - every time I set air to blow towards windshield, recirculation is turning off - and there is no way to turn it back on if selector is still in the ...
3
votes
0answers
52 views

What's this strangely marked control on my Eclipse?

My 1995 Mitsubishi Eclipse, and presumably other Mitsubishis of the same era, has a control over by the rear windshield wiper control, near the center vents. It's got 2 pictures of a person sitting. ...
2
votes
1answer
64 views

A/C Issues with a Mechanical Temp. Control

First Start of my A/C is good but when my evaporator is cold, my A/C Goes On and Off Rapidly. On for a second then Off for a Second. Does it have to be the Mechanical Temperature causes the problem? ...
3
votes
3answers
267 views

Why is there no vent option for combined defrost/face?

I've wondered about this one question for the better part of twenty years: why is there no option for you to set the air vent to split between face and defrost? That is, the airflow options on ...
3
votes
1answer
2k 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 ...
3
votes
1answer
4k 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 ...
2
votes
1answer
97 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 ...
2
votes
2answers
7k 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 ...
1
vote
1answer
456 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 ...
4
votes
1answer
659 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
votes
1answer
1k 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 ...
5
votes
3answers
2k 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 ...
5
votes
1answer
402 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 ...
5
votes
3answers
971 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 ...
2
votes
1answer
169 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 ...
2
votes
2answers
2k 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, ...
1
vote
1answer
967 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 ...
1
vote
1answer
2k 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 ...
5
votes
2answers
2k 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
votes
2answers
560 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
votes
1answer
2k 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 ...
5
votes
1answer
5k views

toyota corolla 2001 air duct smell [duplicate]

My 2001 Toyota Corolla recently started smelling very foul whenever the air system was turned on. According to the research I've done online, there is no cabin air filter to change. The glove box ...
4
votes
4answers
13k 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
votes
2answers
3k 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 ...