Question about 2001 Chevrolet Cavalier

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Screech at startup, air conditioner causes shutoff

I have a 2001 Chevy Caviler. Recently, when I start the car, it makes a loud screech right at startup. I've tried taking it to a mechanic, but the problem comes and goes, so they were unable to reproduce the noise when it was in the shop. Also, if I start the air conditioner while the car is running in park, the engine will shut off. If I am driving, the engine bogs down heavily so much that I am forced to turn off the air-conditioner. What could be causing this?

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Install a new belt and see if that does it and the tensioner is working properly.Here's a link on how to replace.

Posted on Nov 28, 2012

  • lenzotristan
    lenzotristan Nov 28, 2012

    Do you think it would be a problem with where the belt turns the AC compressor? Maybe it's having a problem turning, and when the AC is on, causes the belt to slow.

  • Anonymous Nov 28, 2012

    When the air is on there should be some feature that makes sure the idle is brought up so if you slow down or stop the car won't stall. You would think a repair shop would check it over more completely,they should have a data base of the cars features.



Did the shop not road test it with you driving & then them?

Did you not explain about the a/c shutting off or the drivablity

Posted on Nov 28, 2012

  • lenzotristan
    lenzotristan Nov 28, 2012

    Yes... I explained that. The problem is that it's come and go. When I brought it in, the car didn't make the noise at startup, and didn't have the problem with the air-conditioner. They didn't do a road test as far as I know.

  • Anonymous Nov 28, 2012

    I wouldn't deal with any repair shop doesn't road test before & after any work is done. You don't drive a car inside & the customer don't have any issues except on the roadways right. You wonder why they never find anything,I don't,i know why



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SOURCE: My air conditioner is not blowing out "cold" air and makes noise

The anti coolant is what is added to your radiator so that the water does not freeze when the temp goes down and damage your pump. hence do not confuse this with the air conditioner. When you put on the a/c the load noise could be the engagement of the solenoid coupling your a/c compressor to the engine. If you notice within the bonnet for the gas filling inlet there must be signs of cooling. if not check over the condenser filter on the glass window for any signs of gas or gas pressure , smoky means low gas but a good pressure of gas indicates good visiblity. If not there has been a gas leak and your whole a/c system needs a check right from the compressor to the condenser to the cooling coils inside the dash. The leak has to identified by a pressure check with air filled, check for blocks before the gas can be filled. The compressor pump pressure must be checked or must be overhauled, replacement of the O rings, and reset. I hope you got an idea to proceed and hope I could help. Good day.

Posted on Jul 22, 2010

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