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A.C. Will not cool?

Tiny
DADDYOMEDIC
  • MEMBER
  • 2004 CHEVROLET CAVALIER
Air Conditioning problem 4 cyl Front Wheel Drive Automatic 69388 miles

The air conditioner has plenty of Freon but it will not blow cold air. When I turn the thermostat to cold the AC does nothing just warm air comes out.

Please help me guys!
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Sunday, June 21st, 2009 AT 8:05 PM

12 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
This sounds like you have a problem with the temperature blend door cable that has gone bad or broken which is common. Here is a guide to help confirm the problem.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

and this will show you what you are in for when changing the cable out.

Here is a what it will be like on your car (below).

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Thursday, October 12th, 2017 AT 7:57 PM
Tiny
AKORN1012
  • MEMBER
  • 1 POST
  • 2004 CHEVROLET CAVALIER
Air Conditioning problem
2004 Chevy Cavalier Automatic 113000 miles

When I start my car, the air does NOT get cool. Once I get driving it slowly cools up then if I stop at a red light, the air gets very warm! I had my freon thing checked with the gauge and its fine. What else could be wrong with it? I remember last year I never had this problem and whether I was sitting or not, it was always cold. Could you please help me? Thanks.
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Thursday, October 12th, 2017 AT 7:57 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
How do you know it's full? Did a professional check it or just a DIY guy or autoparts person. It could be anything fro m a compressor going bad to the orfice being partially clogged. You could also have a pressure switch knocking it off when it comes to an idle.
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Thursday, October 12th, 2017 AT 7:57 PM (Merged)
Tiny
SNIPERSTAGG
  • MEMBER
  • 1 POST
  • 2004 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • MANUAL
Car does not blow hot air when running.
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Thursday, October 12th, 2017 AT 7:57 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the thermostat, heater core and air blend door/actuator
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Thursday, October 12th, 2017 AT 7:57 PM (Merged)
Tiny
TEKNICKAL69
  • MEMBER
  • 1 POST
  • 2004 CHEVROLET CAVALIER
  • 154,000 MILES
(2004 Chevy Cav ) While in park, the ac blows warm air, but I can hear what sounds like a motor run and cut on/off every few seconds. While I am driving though, it starts to blow cold air. Any idea what this may be, I added a can of 134-a(small can) and still same problem. Please help me =)

Nick
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Thursday, October 12th, 2017 AT 7:57 PM (Merged)
Tiny
SEANGRANT00
  • MECHANIC
  • 334 POSTS
This might be your compressor. If you overcharged the system this could happen. What was the PSI after you added the r134?

Sean
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Thursday, October 12th, 2017 AT 7:57 PM (Merged)
Tiny
ANANGELOFASTAR
  • MEMBER
  • 2 POSTS
  • 2004 CHEVROLET CAVALIER
  • 156,125 MILES
Hello, the air conditioner is not working properly. When I turn it on, the car sounds like it's trying to die on me but it hasn't actually died on me yet. It occasionally blows cold air but mostly warmer air. I am trying to keep it off as much as possible but with the heat, it's difficult. I had a friend that put something in the coolant and it said on the gage, it was over in the danger level. Not sure what that means either. Any ideas as to what it could be?
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Thursday, October 12th, 2017 AT 7:57 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Recomend have diagnosed by a trained Tech
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Thursday, October 12th, 2017 AT 7:57 PM (Merged)
Tiny
HARLEYQUINN41
  • MEMBER
  • 1 POST
Hi I have a 2004 Chevy cavalier I just had my ac checked by a certified tech everything is where it needs to be. I just have a low vent flow when it's running. The ac blows cold and when I have it on the highest fan setting it's blowing out the vents very little. What do I need to do to fix this. Please help I have babies that I have to put in the car alot and it's been to hot for them.
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Friday, September 23rd, 2022 AT 12:30 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It sounds like you may have a vacuum leak under the hood near the engine that feeds the HVAC system. It will be a small line like the one in this guide.

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

Lift the hood and use a flashlight to see if you can find the vacuum feed line to make sure it is working. Also, you can remove the vacuum line for the recirculation blend door actuator to see if vacuum is present when the engine running, here is the actuator location in the images below. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.
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Friday, September 23rd, 2022 AT 1:05 PM

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