Question about 1999 Pontiac Grand Prix
I was out of town for the day got back in town and turn the corner and the car died, tried to start the car would not run more then 10 to 15 secs, cleaned the MAF sensor with the right cleaner will run for about 30 to 45 secs now, I can rev it up and as soon as I take my foot of the gas It dies, what could my problem be. Help
I can almost guarantee it’s not anything to do with his "turbo" or a vacuum leak.
Since I believe this person has GTP, which is supercharged, he is having an issue with his fuel pump resistor. See, GM put a resistor on the fuel pump to make it run at a slowly or faster when the car is pushing boost. I guess their idea was something about fuel econ.
But, when this fails to work the car will die after about 5-10 seconds of running. So there is an easy way to diagnose this problem.
Locate your fuse block under your hood; it’s on the pass side by the battery.
Open the box and find relay #15. Pull out the relay in the attached picture and bend the pin out, reseat the relay and start your car. If your car runs like a champ, you know what the problem was.
And yes, you can run it like this, but I wouldn’t.
Posted on Apr 20, 2009
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Posted on Jan 02, 2017
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