What turn compressor on and off? - Team Camaro Tech
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post #1 of 3 (permalink) Old Aug 28th, 03, 11:56 AM Thread Starter
Join Date: Oct 2001
Posts: 233
Red face

I have a 1979 with a 305. I live in South Texas and it has been hot down here. And the humidity makes it worse. Well anyways. I converted my A/C to the new 134a from R12. Whenever I turn on the A/C the temperature goes up. Once it hit almost 250 degrees. I can be on the expressway going 75-80 and the temparature still doesn't go below 210-230. I notice that the compressor is always on. I've seen other cars where the compressor turns on and off. Is my new compressor history / defective or what. Or is there something else that makes the compressor turn on and off. I'm getting sick and tired of this A/C problem. Any ideas what it might be?
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post #2 of 3 (permalink) Old Aug 29th, 03, 07:32 AM
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Join Date: May 2001
Location: Socorro, New Mexico, USA
Posts: 574
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I always thought ideally you WANTED your compressor to always run -I hate when they cycle! Do you understand how A/C works? there is a condensor mounted in front of your radiator that is getting fairly warm. It is normal for your car to run a little warmer with the A/C on but not as warm is yours is running. I would say you have cooling system issues or your car is running a little lean -lots of things can cause it -the A/C is just compounding the problem. Modern cars have electric fans that come on regardless of the engine temp when you turn on your A/C.

Just my thoiughts on the issue -maybe some one else has some other ideas.
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post #3 of 3 (permalink) Old Aug 29th, 03, 10:00 PM
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Join Date: Nov 2002
Location: Aiea, Hawaii
Posts: 571

A buddy with a 80 camaro had a real nice hotrod enginemade but got a missmatch of computer to engine. A/C off and the computer is turning the compressor on and off when the A/C isn't running. Anyway you might have a non A/C rated rediator. Seems you aren't blowing off enough heat with the added wind brake in front of you radiator. The drag of the compressor makes the engine put out more heat also so it might be dragging more than it's seposed to. Good luck.
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