Having problems with your 1999 Pontiac Grand Prix ?

99 Grand Prix GT stalls when MAF is connected

\015 My 99 Grand Prix GT was running fine and then when I turned it off and tried to start it when leaving somewhere, it wouldn't work. It was like it would ONLY run when cold. If it warmed up, it would stall out. We have changed the Cat. Converter and it is still running poorly. If I unplug the MAF sensor, it runs fine but tries to stall. BUT if it is plugged in, it won't even idle. I don't know if it is truly the MAF sensor or if it is just something else causing this problem.\015 Posted / edited by AnonymousUser on : 19-11-2018

Answers :

I RAN INTO THIS BEFORE TRY THE IGN MODULE UNDER THE COILS WHEN THEY HEAT UP CARS QUIET AND DO NOT START
Repair Help & Product Troubleshooting for 1999 Pontiac Grand Prix

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