Idle issue

Asked by Apr 26, 2017 at 06:28 PM about the 1998 Pontiac Grand Prix 2 Dr GTP Supercharged Coupe

Question type: Maintenance & Repair

I have a 98 pontiac grand prix with super charged
3800 2 engine. Car will start every time. After
about 5 seconds it will die. Any idea of what it
might be. Engine codes are 0306 0440 0420 0442
Thanks for anyone that can help me.

5 Answers

27,795

hi...here you go best pages ! P0306 Cylinder 6 Misfire Detected Read more at: https://www.obd-codes.com/p03-codes Copyright OBD-Codes.com P0440 Evaporative Emission Control System Malfunction Read more at: https://www.obd-codes.com/p04-codes Copyright OBD-Codes.com

27,795

CHECK YOUR CAT !!! > P0420 Catalyst System Efficiency Below Threshold (Bank 1) Read more at: https://www.obd-codes.com/p04-codes Copyright OBD-Codes.com

27,795

P0442 Evaporative Emission Control System Leak Detected (small leak) Read more at: https://www.obd-codes.com/p04-codes Copyright OBD-Codes.com

27,795

THATS WORTH A GOLD STAR

20,915

And at its age it would not hurt to clean the throttle body & IAC with throttle body cleaner and install new gasket on them.

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