2002 Pontiac Grand Prix Logo
David Gibbons
David Gibbons Posted on Jun 05, 2009
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Runs cold, but dies when up to temp.

I have an 02 Grand Prix Gt 3.8 non supercharged, It will start up and run fine cold, but once it gets up to temp, it dies out and wont restart. I have changed pretty much all the top end of motor sensors, and the EGR, Fuel pressure reg, Cat converter, I am not getting any codes, it just simply dies, and then it will only start if you feather the throttle, but it does not run smooth, and if you don't keep feathering it will stall. What can this be??

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  • David Gibbons
    David Gibbons Jul 04, 2009

    Turns out it was the mass air flow sensor. Dealer tried to sell me one for $430. I paid $130 and took all of two minutes to change. Runs great now.

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honeymokey

honeymokey

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  • Master 3,113 Answers
  • Posted on Jun 05, 2009
honeymokey
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Crank sensor. When it cuts off again spray some water on it and see if it will start.

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