Question about 1994 Pontiac Grand Prix
My car will rev to 3000 rpm at first start then run really rough then stall...If I keep my foot on the gas peddel it will stay running. Once it is warm it is fine.
CHANGE FUEL FILTER CHECK YOUR UPPER AND LOWER INTAKE GASKETS OR THROTTLE POSITION SENSOR
Posted on Jul 24, 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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