Air conditioning after driving a while starts blowing warm air

2004 CHEVROLET TRAILBLAZER
184,000 MILES • 4.2L • 6 CYL • 4WD • AUTOMATIC
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PENNY CARTER
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  • 2 POSTS
Air conditioner works when I first start car and drive for quite a while and then all of a sudden it will stop. blows really cold air when it’s working, and then starts blowing warm air after driving for a while. Not low on Freon I checked it.
Sep 2, 2019 at 5:45 PM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good morning,

Can you give me the low and high side pressures when it blows warm? I need those readings to help determine the failure.

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

Does the water drip on the ground when it is running?

Roy
Sep 3, 2019 at 5:34 AM
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PENNY CARTER
  • MEMBER
  • 2 POSTS
I haven not checked the pressure. but yes water is dripping from underneath the car when the car and air is on.
Sep 3, 2019 at 4:39 PM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Okay, you can rent a set of gauges at a parts store or buy a cheap set at Harbor Freight?

Let me know when you get the pressures.

Roy
Sep 4, 2019 at 3:35 AM