When I turn my a.c the rpm drops, engine shakes violently and rpm goes up and down about 3 times. The car is absolutely dead in acceleration and when I come to a stop or go in reverse the car shutters and starts knocking and turns off. I have replaced spark plugs and injectors and new fuel pump. Could it be a bad a/c clutch or a dirty maf sensor( sensor is working because when i unplug it while car is running car turns off) or a idle control valve?
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