Ac compressor will not shut off

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C1500Atx

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Feb 4, 2018
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Austin
My Ac compressor will not cycle off. The clutch only disengages when I press the Ac button in the cab. The truck is a 97 1500 5.7L. Entire Ac system was replaced 2 years ago
 

bigfutz

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Aug 26, 2018
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I would take it back to the shop that did the work. Is that the old refrigerant or new? I have a ‘95 with issues, wondering what I might havr to pay for a compressor/full system replacement.
 

DerekTheGreat

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Well I'm a novice but if the "A/C" button/indicator is lit then the compressor should be engaged. In hot temps it may never cycle. There's a calculator for that which is dependent on ambient temp & humidity. It will even engage in the defrost position as it helps with defrosting by sending dehumidified air to the windshield. Are you saying that even with the fan/system set to "off" the clutch is still engaged?
 
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