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Intermittent AC Problem

Tiny
19NIGHTRIDER55
  • MEMBER
  • 2000 BUICK PARK AVENUE
I am having problems with my AC. It will work for a day or so, then it will stop. Eventually it will start working again. For example, as I am driving, it will be on and blowing hot air, but then it will start blowing cold air. I took the car to the Dealer. They had my vehicle for three days. They replaced the relay and charged me $212.00. The same day that I picked up the car, the problem returned. I called the Dealer and they said it might be my computer and to bring it back in. I don't think they have the experts to work this problem. Other forums I researched said to check the high pressure switch. What do you think is wrong and what should I do?
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Saturday, July 1st, 2006 AT 8:42 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

This kind of problem usually leads to the compressor clutch coil which short out all the time. If the compressor is getting power but not working this is your problem.

Here is a couple of guides that will help you get the problem fixed. Test at the compressor

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

https://www.2carpros.com/articles/replace-air-conditioner-compressor

and

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Please let us know what happens.

Cheers, Ken

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Thursday, July 20th, 2017 AT 1:30 PM

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