air conditioning compressor

CHEVROLET SILVERADO
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7243547
  • MEMBER
  • 1 POST
a/c compressor will not turn on
blower, heater and defrost work fine
checked fuses and changed a/c relay-no change
no oil stains, now what?
Mar 10, 2007 at 2:35 PM
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BOOTDOG
  • ✓Experienced Mechanic
  • 665 POSTS
you probably have a small leak somewhere and enough freon leaked out over time to where the ac compressor won't cut on. you'll need to take the vehicle somewhere to have the shop hook up ac gauges to check the high and low pressure.
Mar 11, 2007 at 12:19 AM
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WILLIW50
  • MEMBER
  • 2 POSTS
Unplug the low pressure switch and use a jumper wire to bypass the switch. You can also jump the compressor itsself to isolate the problem
Mar 12, 2007 at 7:39 PM
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