A/C Compressor Clutch not Engaging - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-26-2005, 07:25 PM   #1
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Default A/C Compressor Clutch not Engaging

Hey hows everyone doing good I hope! Me and my car have been doing great over the winter season about until now when i go to turn on the the A/C and it doesn't put out any cool air whatsoever. I checked under the hood and found that the compressor never engages. I asked my dad the A/C repairman (what he does for a living for houses and businesses) and he said that he had to replace the high or low pressure cutoff wire like 10 years ago and he thinks it might be one of those. He'* just not sure where they are do any of you guys know where they are? Or have any other ideas of what it might be? Oh btw he checked the freon and said it was ok but hes not too sure on that bc without the compressor running its not too accurate. Thanks!! ttyl!
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Old 04-26-2005, 08:40 PM   #2
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Check to see if it is getting power the relay could be out
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Old 04-26-2005, 09:11 PM   #3
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what'* your email? I'll send you the diagnostic charts for AC clutch.
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Old 04-26-2005, 09:42 PM   #4
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how would i check to see if its getting power?
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Old 04-27-2005, 09:14 PM   #5
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Default Disconnect Battery for 30 seconds!

Try this first......disconnect battery for 30 seconds to reset engine computer. Sometimes a high/low pressure reading will kick the compressor out of range and the computer needs to be reset. It'* worth a try first before spending big $.
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Old 04-27-2005, 11:10 PM   #6
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I had to disconnect and reconnect my relays a couple times... they had dirty contacts.
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