let me start off with the fact that this is my wife's car and it has been sitting for about three years now and it ran fine when i parked it, i think i already know the answer to this question but i would like some opinions before i go through the pain of removing the gas tank to replace the fuel pump, it will crank but not start (unless) i spray some mass air flow sensor cleaner into the intake, it fires up and dies, i have replaced the fuel pump relay, no good, checked the voltage to the relay, checked voltage coming out of relay (gray wire) going to the fuel pump, has voltage for a few seconds, checked connector at the tank, same thing, can't hear the "whirring" sound the fuel pump is supposed to make when you turn the key on, so............fuel pump replacement or does somebody else have another idea

 

to confirm check fuel pressure. number 33 on the list here. 4th Gen LT1 F-Body Tech Aids

 

Power from the relay to the pump, but not hearing it prime (and you should)....sure sounds like your fuel pump is D.O.A. But, go ahead and check your pressure for the fun of it.
class89, you'd also be better off starting your own thread on this.

 

yeah, i forgot to mention that, i checked pressure @ the schrader valve, 0 p.s.i., i even tried depressing the needle in the schrader with the key in run position and nothing but a little dribble, i read in the pump pressure problem thread where you used the hatch method to replace your pump, and i posted that was the way i was going to replace mine but after thinking about it i figured i would drop the diff. since i have a lift in my shop, thanks for the reply!!

 

...correction.... it was from the "fuel pump location" thread.......

 

moved your posts and created a thread for you. your on the right track. i have done the, take the tank out change and would not do it again.

 

Go over to your PCM and find this wire:



Connect it to the + terminal on your battery and listen for your fuel pump. This should bypass the PCM/relay and cause the fuel pump to fire right up, even without a key in the ignition.

If your fuel pump is dead I'd go ahead and do the trap door mod to remove and install. You can use a Dremel to cut open the hatch without sparks (did mine Thursday when my pump finally quit, took about 6 cutting wheels).

 

thanks craby, i wondered how that happened, i looked to see how to start a new thread but it was already there, now i'm going to post the pics of the tank removal.....

 

yeah, i checked there too, i even hooked straight from my grand am battery to the gray and black at the harness going to the pump at the tank and still nothing, i debated the hatch vs. dropping the tank and decided to drop the tank, it was as bad as i thought it would be, i'm about to post the pics now

 

ok, pictures will come later, i have to resize them, i forgot to set my camera to a smaller format, long story short, i got the tank out, wasn't as bad as i thought, i did have to do a little bit of notching but it's where only i would know to look, as soon as i get my pics right i'll post them