Car keep stalln

Asked by Mar 22, 2016 at 05:29 PM about the 2003 Pontiac Grand Prix GT

Question type: Maintenance & Repair

I have a 2003 grand prix....my car will crank
wit no problem but once it gets warmed it
...it shuts down....it will crank but cuts right
back off....checked crank sensor, fuel pump,
fuel injector, plugs n wires, n cam
sensor....it's has only 150,000 miles on
it....gt it less than2 months ago....i dnt know
wat else to check...if u had this problem
please help me out...thanks n advance

2 Answers

60

If the engine light comes on and stays on a scanner should be used to go directly to the problem. If no engine light then normally you look at the fuel pump and new pumps can be bad right from the box, did you have a new fuel filter installed. Other thing to try is when it shuts down remove the fuel filler cap cause if the vent is bad in the cap it will create a vacuum in the tank and that will shut your car down. When you remove it after your car shuts down listen for it to suck a lot of air into the tank. Try starting the car and if this helps leave the cap loose but replace it immediately with a new one.

60

Just don't be driving it with the gas cap loose.

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