have to ground a/c relay to get compressor to start

2002 CADILLAC DEVILLE DTS
154,000 MILES
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JOHN4084
  • MEMBER
  • 1 POST
The ac compressor wont come on it is full of freon and the fuses are good and the relays are good too. I can get it to come on if i put ground to the a/c relay. All the fuses and relays are good the a/c system is new the only way I can get the compressor to come on is to put a ground to the relay in the juction box
Dec 21, 2011 at 7:08 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
The computer might not be grounding the AC relay or a problem with the pressure switch and also still low in freon-Check it with a manifold gauge
Dec 21, 2011 at 7:21 PM
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