Questions about Air conditioning systems - other Heating and ventilation questions should use 'hvac'

learn more… | top users | synonyms (1)

3
votes
1answer
1k 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 ...
3
votes
2answers
282 views

Air conditioning not on, but still giving out cold air when car in motion, and makes hissing sounds

Have a 2000 Honda Accord 4 cylinder. Problem started last week. Turned a/c to cold, cold air not as cold as before, plus a loud hissing sound that seems to be coming from the passenger side, under the ...
3
votes
0answers
119 views

Volkswagen A/C Intermittent

I want to repair my Volkswagen Passat '07 A/C. I've taken it to two shops (dealer and independent) and they both say the entire a/c system needs to be replaced. The strange thing is, that sometimes it ...
3
votes
2answers
173 views

98 Volvo S70 Manual Climate Control to Automatic

I own a Volvo s70 with the Manual Climate Control AC Control Unit. Is it possible to simply install an Automatic Climate Control Unit? Or does this require additional work? (Not just drag and drop ...
2
votes
2answers
358 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 ...
2
votes
2answers
149 views

1995 Mercury Mystique - AC compressor turning on and off

The AC compressor in my car is turning on and off repeatedly, and not really getting a chance to get cool. From what I've read this can indicate low coolant. I've just had the system repaired a month ...
2
votes
1answer
2k views

AC sytem repair after bad compressor

I had my AC compressor removed and replaced with a dummy pulley about a year ago. The reason was I had a long trip ahead of me and the compressor was making some funny noises, as if she was about to ...
2
votes
2answers
315 views

AC repair need help so bad it's hot!

08 PT Cruiser blows warm air but never gets cold. Tried Freon but it doesn't blow cold or last long at all. It sounds like it's clicking on and off not too rapidly when driving it blow slightly cooler ...
2
votes
1answer
830 views

AC not cold anymore on brand new VW Polo

I've brought a new VW Polo 2012 plate. It's only a few months since it was registered by the dealer. However all a sudden the AC has stopped working. When I press the button labelled AC the light ...
2
votes
1answer
610 views

Understanding NA Ford Escort air conditioning modes

I had read through 1999 Ford Escort Owner’s Manual, and have few questions regarding air conditioning modes. The manual’s section on climate control states: The air conditioning compressor will ...
2
votes
1answer
61 views

Air conditioner is hot on one side

My 2005 Chevy Silverado with dual zone climate is occasionally blowing hot air on the driver's side and cool on the passenger. It usually works fine for a few minutes before it begins blowing hot air. ...
2
votes
1answer
447 views

Do I need to add oil after A/C evacuation without replacing any parts?

My 1999 Suburban's A/C started to lose its cooling capacity last fall. In late fall it stopped cooling completely (there was a mechanic involved with other parts of the vehicle at the time). This ...
2
votes
2answers
45 views

What does it mean if felt- like pieces come through vent when AC is on in Toyota Avalon?

2006 Avalon xls 70k miles has just started throwing out a few pieces of what appears to be little triangles of felt like material through the vent when AC is on. Not a lot but is something breaking ...
2
votes
1answer
11 views

How to replace broken AC pressure switch Kia Optima 2006

I was replacing the windshield fluid motor in my wife's car, and I saw this sensor had broken in half. Says it's an AC pressure switch, and looks like I could just unscrew it and replace. Except for ...
2
votes
1answer
39 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? ...
2
votes
2answers
242 views

A/C causes the the car to die

I have a 1999 ford ecsort Zx2 it has the 2.0L DOHC engine in it or known as the Ztec engine. When I am driving with the A/C on it sputers and dies but restarts. What would cause this? it runs just ...
2
votes
1answer
548 views

My a/c goes in and out at random times. Help!

I have a Pontiac Grand Prix GT 1998. She runs great except my A/C is now acting up. I first noticed it a few weeks ago. I was driving and it was almost like someone had turned the air down so it ...
2
votes
1answer
441 views

Blower motor resistor Continuously Going Out…or not?

I drive a 2004 Chevy Monte Carlo and the A/C is usually fine. However, this car has gone through 4 blower motor resistors. What happens is that, randomly while driving or when turning the A/C on (it ...
2
votes
1answer
3k views

Do I need to replace the A/C Clutch, A/C Relay, or A/C Belt?

My '05 Mazda Tribute (just over 200,000 miles) is having problems with the A/C. A while back it was the freon according to the previous owner. I connected a pressure gauge to the low pressure end of ...
2
votes
1answer
473 views

Adding air condition (con) CONTROLS to a Peugeot 206

I emphasise CONTROL because pug has an air con button. I have heard people say it is too expensive/difficult/ just not worth retrofitting air con to a car but I would like to swap the single button ...
2
votes
1answer
51 views

Horrible rotten feet smell from my 2013 chevy malibu ltz

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 ...
2
votes
1answer
147 views

Subaru Outback - AC blowing less air out of one vent

I have a new 2015 Subaru Outback. A day after I got it, I noticed a faint crackling noise coming from the air conditioning vent when the AC is set to high. It's very faint but it's very noticeable. ...
2
votes
2answers
204 views

air conditioning working intermittently 2004 Ford Freestar

Hoping we can find a solution to our AC problem. Normally our AC is just blowing out warm air when AC is on. Warm air comes out in front and back of van. The air does not normally work but once in ...
2
votes
1answer
43 views

Anyone knows of a tutorial on how to remove/replace the radio and AC unit in a 2001 Subaru Legacy?

I have new radio and AC units for my 2001 Subaru Legacy L Station Wagon but I do not know how to install them. It seems more complicated than I expected. Does anyone knows of a good tutorial or manual ...
2
votes
1answer
576 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 ...
1
vote
1answer
48 views

Most Efficient Way To Run AC

What's the most efficient way to run the AC in my car? In my 2007 Subaru I can set the temperature to 65 F and the temperature will reach and stay at a comfy 65 degrees. But I imagine the A/C ...
1
vote
1answer
223 views

High RPM and engine heating on 2001 Subaru Legacy

I have a 2001 Subaru Legacy L station wagon with 143k miles. I do not know when the timing belt was done, or when the spark plugs were replaces last. I only know that the brakes, tires, and one of the ...
1
vote
3answers
743 views

How to remove stuck AC barrier hose without damaging barb fittings?

I'm trying to remove 23-year-old AC barrier hose from aluminum line so I can replace them. I split the crimped ferrules and removed them. The hoses are stuck on. I'm sure they've permanently deformed ...
1
vote
1answer
2k views

Air conditioning gradually stopped working, hissing noise

On my 2003 Kia Sedona minivan, the air conditioning recently stopped working. This occurred somewhat gradually over the course of a week or so. I noticed today that if I turn the air conditioning ...
1
vote
1answer
550 views

AC/heater fan only blows at high speed [duplicate]

All of a sudden the AC/heater fan on my 2004 Toyota Matrix does not work properly. The fan has four positions. The first 3 no longer blow air at all, but the 4th position (the highest) works. A ...
1
vote
1answer
25 views

1995 Grand Marquis Blower Motor housing L&R

The blower motor housing is shot. both left and right side. I got the right side off pretty easy but the left side looks not so easy. If I am looking at it correctly, it looks like the heater core ...
1
vote
1answer
66 views

A/C Fan Speeds Working on High and Low only on 2004 Mercury Grand Marquis LS

On my 2004 Mercury Grand Marquis, the blower just started working on only two speeds, high and low. Recently the blower suddenly quit working altogether and it was the resister. What's the best take ...
1
vote
1answer
705 views

Malfunctioning air conditioner mystery - recharge makes car run worse

The air conditioning in my 2002 Subaru Impreza has sort of worked the last couple years. This year it got bad enough that I began trying to fix it, but even though it's totally useless on a 30 minute ...
1
vote
1answer
108 views

Intermittent aircon problem: Subaru Impreza Wagon 1996

Subaru Wagon Impreza 1996. Automatic, 1600cc. The gas (refrigerant) has been refilled recently, so that's all good. The air seems to be colder when the revs are higher (>2,500 rpm or thereabouts). ...
1
vote
1answer
29 views

Changing climatizer filter in Cordoba 2005

How do I change the climatizer air filter in a 2005 Cordoba (2nd series I believe)? I know for sure it's under the passenger seat, because I saw once a mechaning changing it. I want to do it myself.
1
vote
1answer
239 views

Adjusting the idle setting on a 2005 Cavalier

The air conditioning unit on my 2005 Cavalier only engages when the engine is idling above a certain level (observationally, it appears to be between 1000 and 1200 rpm). During the summer months, ...
1
vote
1answer
273 views

Renault Megane I 1.6 Airconditioning pump seized

My Renault Megane I 1.4 RT's airconditioning pump recently totally seized. When the seize happened, it also broke off the crank pulley. I have now replaced both the airconditioning pump and crank ...
1
vote
1answer
361 views

Vibrating sound coming from air condition vent when turned up high?

When I turn my ac up high, I hear a vibrating sound coming from one of the vents. It vibrates more if I turn it up higher. What could this possibly be?
1
vote
1answer
4k views

Hard shuttering and engine dies when A/C is on at idle

When the car is idling and the A/C is turned the engine will shutter hard and/or turn off. I've already replaced the IAC valve; it was working for a little, but now it's back to shutting off. The ...
1
vote
0answers
30 views

Car AC is not working [closed]

My car AC was working perfectly and today i took the car (Honda City 2000)for oil change and car wash. The man has blow the air and wash the engine as well. After that my car AC is not working. Please ...
1
vote
1answer
115 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 ...
1
vote
0answers
54 views

Inverting the A/C VSV Switch

I bought a 2E Carburetor for my 4G13 Engine. My Problem is that 2E Carburetor Idle Up A/C Vacuum Actuator needs vacuum when the engine is on and when the A/C is On, the idle up vsv will be Off (or no ...
1
vote
1answer
49 views

A/C Idle Issue on very hot weather

My Vehicle is a 1996 Mitsubishi Lancer (CB1A) with a 4G13 Engine and I'm having some A/C Issues when the weather is sunny hot. I already replace with a new ones like Mitsubishi-Air A/C Compressor, ...
1
vote
1answer
125 views

A/C blows hot air on acceleration

2008 Malibu A/C blows hot air on acceleration. At idle or once maintained speed, it cools and blows cold again.
1
vote
1answer
46 views

AC on driver's side is bad.

I have Mercedes E350 2009. On driver's side, AC is not as cold as the passenger's side (second and back). Also, AC is much colder when air intake is set to inside but every five minutes it disconnects ...
1
vote
0answers
22 views

A/C Reciever Drier for 1962 Skylark

I need to replace the A/C receiver drier (a.k.a. accumulator) in my 1962 Buick Skylark (V8 convertible), however the aftermarket ones I've been finding online (e.g. ...
1
vote
0answers
55 views

Dodge 3500 AC-Nasty Smell-Diesel Truck

My Dodge 3500 ac was blowing fine this morning, and then all of a sudden it had a burn mildewy smell, and now its blowing hot air? Any suggestions?
1
vote
1answer
62 views

How can I tell if the AC is discharged?

Title basically says it all. I need to convert from R12 to R134, and was told that the ac was discharged when I bought the truck, but I want to double check. Thanks
0
votes
1answer
46 views

Air vent squeaks while car in on position

My kia rondo 07 if I have key in on position but not started I turn air on and it squeaks like old door hinge is that not normal or a problem
0
votes
1answer
38 views

Late 90's Saturn - troubleshoot A/C

My son's car was hit in a low-speed collision...messed up the windshield and some cosmetic damage. Aside from that, the A/C has stopped blowing cold (but it still blows). A visual inspection of the ...