My 2004 grand prix gtjust wont start.. i was driving and all of a suddon my check engine light started flashing and my car started putting as if it was running out of gas, so i put gas in the car and
Asked by Clifton Jul 12, 2015 at 07:52 PM about the 2004 Pontiac Grand Prix GT1
Question type: Maintenance & Repair
when i went to start it, it sounds like it
wants to start but it doesnt. Ive replaced
plugs, wires, coils and the module, crank
shaft sensor. And i dont know what else is
left
8 Answers
Are you getting gas? Whats the pressure at the rail
Why did you replace all those parts without knowing what the problem is? Diagnose first, then fix. Its way cheaper and much faster, plus you end up with a car that runs. It's unlikely that a plugged catalytic converter would prevent the car from starting. This sounds like a failed fuel pump to me. Check fuel pressure as was suggested above and check for codes.
The fuel pump is working perfectly fine. But i havent scaned for codes yet, i was suggested to check catalytic converter and also timing chain... could that be an issue to worry about? And thanks for your feedback and helpfull tips
And i tried starter flued and it wasnt helpfull at all
Ok so i took my car and had a full diognostics test and the only thing came back was the engine is losing compression. Its at 70 when it should be at 145. Does anyone know what can cause my car to loose compression?
Ok so i got to the timing chain and it looks like its in perfect working condition..how do i tell if the timing chain has jumped???
The chain should also be quite tight. If there is a lot of looseness in it, even if it hasn't jumped you should replace the chain and gears while you're in there. A chain set isn't that expensive and as you now know getting to it is a bit of a chore..
