Everytime i tun on the A/C the revolution go down and if im on a stop or red light the cars shuts down.

2004 GMC ENVOY
22,500 MILES
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EDGARMA
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My 2004 GMC envoy is giving me problems, Everytime i tun on the A/C the revolution go down and if im on a stop or red light the cars shuts down.
Jun 15, 2012 at 4:04 PM
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SATURNTECH9
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Does the compressor make any loud noises when turning the ac on?
Jun 15, 2012 at 4:11 PM
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EDGARMA
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no
Jun 15, 2012 at 4:16 PM
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SATURNTECH9
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When the engine is all cooled off see if the center of the ac cluch spins freely.
Jun 15, 2012 at 4:21 PM
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EDGARMA
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Yes it does, I believe the problem is with the engine, I had the A/C repaired not long ago, and when im driving on the highway or any other time I can put some throttle on it, the A/C works fine.
Jun 15, 2012 at 4:23 PM
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SATURNTECH9
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Is your radiator/condensor fan working correctly?If not then that can put more of a load on the engine.
Jun 15, 2012 at 4:47 PM