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Re: 2002 Grand Prix A/C Troubles
At the relay with car running and a/c requested there should be +12v at 2 pins and a ground from PCM on another and then the feed to the compressor- should be katy-cornered from one of the 12v--to determine the constant 12v-- turn car off- and see which ones dies when a/c fuse 10amp underhood is pulled..then jumper it to the compressor feed- should also correspond to the 30 and 87 imprinted on back of a/c relay..if a/c fuse is good then compressor clutch should pull in...
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Automotive A/C Engineer with:
'99 IH 4700 Toy Hauler
(2) '95 GEO Prizms both maroon
'99 GMC Yukon
'95 Chev 3500, 454 Dually Crew Cab- 145k miles-
Wife's Camel trailer puller.
'94 Astro- 370k miles
'94 Firebird Formula- 5.7L 180k miles- gone-
'92 Chevy Lumina Van 3.8L 264k
'86 GMC S-15 - 2.8L 154k
'87 Buick Park Ave . 187k
'86 Buick Park Ave 3.8L 199k miles- gone
'77 Chevy Vega- 2.5L 175k miles gone but not forgotten
'68 Camaro 396 4 spd RS/SS -72k miles-
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