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#1
06-29-2007, 05:44 PM
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a/c compressor won't engage
alright, i drive a 93 silverado, i had noticed the compressor would cycle on and off for about 1 second, then suddenly it stopped working. i left for Marine boot camp 3 days later, now I'm back home and want to fix it. i have no idea why its not working, any one have any knowledge on this subject?
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#2
06-29-2007, 06:42 PM
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Re: a/c compressor won't engage
A couple of things come to mind. The system is to low on freon so low pressure switch won't work or it could be that the low pressure switch ( on the accummulator) is bad. I also have a 93 and have had to replace the switch before. But I would almost bet that your system is low on refrigerate. You can jumper the wiring harness at the low pressure switch to see if compressor comes on but don't leave it that way.
AND THANKS for your service!!!
__________________
2006 VW Jetta TDI Diesel (Super fuel mileage) 2004 Chevy 2500 6.0 Crew Cab 1993 Chevy K1500 5.7 (love this truck)
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#3
06-30-2007, 01:28 PM
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Re: a/c compressor won't engage
how would i jumper the wiring harness on the switch?
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#4
06-30-2007, 02:00 PM
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Re: a/c compressor won't engage
alright, well i jumpered the wiring harness and the compresser does kick on. i have replaced the switch a few times since i bought the truck in 93. how likely is it that the switch is faulty again rather than the system being low on refrigerant?
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#5
06-30-2007, 03:07 PM
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Re: a/c compressor won't engage
Quote:
R-12 or R134a ? But you need to get a recharging gauge set on it and post back low and high side reading with compressor running at idle and at 2K rpm. With something like one of these. http://www.ackits.com/merchant.mvc?S...egory_Code=DIY
__________________
Remember proper testing gives us the answer to many problems. MT
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