Question about 1995 GMC Safari

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On 1995 gmc safari we had a new compressor installed about 3 years ago and didnt have it charged. We added 134a (2) cans and the clutch isnt kicking on. we checked all the fuses and it seems to be holding freon but the clutch is not moving at all. Any help? thanks in advance

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Make sure the low pressure switch on the dryer is plugged up,and the connector on the clutch of the ac compressor,then the problem,might be the low pressure switch,jump the two wires going to it to find out.Rate if you would,thank you.

Posted on Jul 12, 2010

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Posted on Jan 02, 2017

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I just installed a new a/c compressor clutch I put the correct r-134 I put new hoses a new condenssor and accumulator . My problem is I cannot get the clutch to kick in unless I run jumpers to the...


you may have a few different problems including a defective pressure switch

when you added the "correct R-134" did you also add oil?

replacing that many parts requires additional oil

Therefore, you may not have enough "pressure"

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