I have a 97 Pontiac Grand Prix when I run the air it will cut off can someone tell me why is that??

10

Asked by Jun 15, 2014 at 09:20 PM about the 1997 Pontiac Grand Prix 2 Dr GT Coupe

Question type: Maintenance & Repair

3 Answers

122,755

When you run the ac the car will cut off? If this so and it does this when slowing to stop or just idling then it's either your idle air control valve dirty/faulty or dirty throttle plate.

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79,185

When you turn on the A/C an "A/C request signal" is sent to the computer. The computer then speeds up the idle about 50 RPMs to accommodate the added load of the A/ C compressor. With the engine idling switch on the A/C. You should hear and see, on the tach, the engine speed up. Dandy is right, usually a dirty IAC or throttle plate will cause stalling under these conditions. HTH. -Jim

10

Thanks

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