ok- 2000 gtp l67. stalls out either as soon as it starts or shortly thereafter. when it does run it sounds rough. i can hear the fuel pump prime before it starts, and i can hear it running after the car stalls. this started thursday, it stalled, then ran rough for a few minutes then straightened itself out, then i drove it for a few hours with no trouble, then just as i was gettng home it started to die again, luckily it was late, and i floored it and limped it home.
this is what i've done so far:
1. replaced fuel pump speed relay
2. used old relay (that i didn't think was the issue anyhow and bent the pin to bypass the resistor
3. verified the iac was moving and cleaned it up some
4. unplugged the maf- it ran for a bit without stalling, but it was rough and surging up and down, bad enough i thought it was a good idea to shut it off.
5. checked all vacuum lines- and fixed one at the map sensor that looked really bad. also didn't smell any fuel in fuel pressure regulator
6.gor a fuel pressure tester from autozone- fuel pressure at prime was 55, which looked good to me, and it seemed to hold a bit, but the connection at the schrader valve was a piece of crap and started leaking and i wasn't going to try to run it like that, nor do i think it would have worked well anyhow.
the only other clue i can give is that the fuel pump sounds a lot louder than i've noticed, but that may only be because i'm really listenng for it.
any help diagnosing this would be greatly appreciated. if i take the bus to work i still have to walk a mile. and thats after an hour long bus ride.
