Question about 1989 Pontiac Grand Prix
My car will start and run great till it gets warm then it quits. Wait till it cools off and it will start again. I have replaced the coil pack, computer.
Could it be the fuel pump, maf, I'm not sure I yust looking for some where to start.
Starting point is some checks and tests.First,scan the car for diagnostic trouble codes.If a manfunction is occuring,it is highly likely that the vehicle computer has recorded and stored a trouble code or two.The trouble code will point to the system or subsytem or sensor that is malfunctioning.Every trouble code has a diagnostic route to resolve the problem.If you suspect a fuel problem,a pressure gauge should be hooked to the fuel injection rail to verify proper fuel pressure.Also look for vacuum lines that are cracked,deteriorated,or sucking air.Good luck.
Posted on Sep 01, 2008
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Posted on Jan 02, 2017
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