after the car is driven with no problems. Once car is warmed up and driven for aobut 20 to minutes, then shut off. Problem comes back, starts stahls, chokes out no power stahls. once the car is left to sit for a while it will start and drive again.
Car will not stay running on 2004 Pontiac Bonneville
by DCardiff in Fenton, MI on May 14, 2011
ANSWER by Superbob , May 14, 2011
First thing I'd check is the fuel pressure with a test gauge. I think the fuel pump could be failing or the filter could be plugged. If there's any doubt about the fuel pressure and you haven't replaced the fuel filter in recent memory, now's the time for a new filter. Next possibility is ignition failure, but that should cause the check engine light to illuminate, and you didn't mention that. If you want to find a specialist, here's a directory link for you: https://repairpal.com/directory?address=48430&car_brand_names=Pontiac