Question about 1989 Chevrolet G20

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I need to relace refriderant, where is low pressure valve on 1978 chevrolet van air conditioner? just need to know where the low pressure a/c valve is

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Its on the accumulater. on the right buy the blower assy.on the right side

Posted on May 28, 2009

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I need to relace refriderant, where is low pressure valve on 1978 chevrolet van air conditioner?


ALWAYS use the larger hose to put in the freon .. the small hose is the high pressure side stay away from it.. you might look near your dryer or on the dryer to find the port to put it in .. your dryer is about 3 inches across and 8 inches long cylinder.. instal freon with car running and ac on high. an empty system takes about 3 cans normally .. when its about right your compressor should kick in because there is a pressure switch on the dryer that tells it to kick on .. holler if you need more Jerry and thanks ..

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