Having problems with your 2004 Pontiac Grand Prix ?
04 non-super pontiac grand prix does not always start the first time unless gas pedal is depressed during startup. New fuel filter, My guess is a bad sensor, dirty injectors, or low fuel pressure.
Have you check your fuel pressure, sound like you my have a bad check valve on your fuel pmp
Repair Help & Product Troubleshooting for 2004 Pontiac Grand Prix
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.