Car runs want stay started after warms up starts for a second and dies like on 1990 Pontiac Grand Prix

your turning key back off

Asked by for the 1990 Pontiac Grand Prix
1 answer
Replace the fuel pump relay and see if that fixes it. I had a Pontiac Grand Am that would run good, but if it was turned off after it warmed up, it would not restart for an hour. The problem was a defective fuel pump relay.