Question about 2002 Chevrolet TrailBlazer
I would guess your battery cables are loose or dirty, either at the battery or on the starter or ground. Either that or your alternater is on it's way out. It works fine until the AC pump cuts in,which takes a lot of amps, and it kills the engine.
Posted on Nov 16, 2009
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Posted on Jan 02, 2017
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Engine stall or RPM fluctuates
This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control
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