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A/C compressor won't stop running

Old 05-12-2015, 04:44 PM
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Default A/C compressor won't stop running

My A/C compressor gets power to run no matter what I do. If I turn it off or even pull the relay, it still runs. The only way to get the compressor to shut off is to unplug it. I'm also having knock sensor issues, could it be the PCM?
Old 05-14-2015, 04:56 AM
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Since the PCM turns the relay off and on and pulling it doesn't stop the compressor, not the PCM causing this issue. More info on the vehicle would help.
Old 05-14-2015, 06:06 PM
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2005 GTO, LS2. Ported heads and cam. I just put this compressor on used, it's off a 2004 GTO.
Old 05-14-2015, 06:07 PM
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I'm also having knock sensor issues, thought the pcm might be bad


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