starts runs then shuts off any ideas

[big j]

i have a 86 bll lifted 8 1/2 i went road roading one day climbed a muddy hill when i got over it.it started acting up like it wasent getting any gas i drove it home with no problems. went to k mart and just let the truck run and it started dieing down when i gave it gas it almost sounded like it was shuting the motor off i pumped the gas a few times it cleared up then it started getting worst like when i drive down the road after a while i cuts out like im not getting gas but i changed the furel pump on the frame both filters im lost i bought the fuel pump for the gas tank but i would hate to do all the wwork and it not be it.... any ideas cuzs im dumb founded... thanks

[milwaukeeace]

If you find out what the problem is let me know. I have a similar issue that I have yet to pinpoint. I replace the tank, both filters, pressure regulator, and all 6 injectors. I did NOT replace the in tank pump however. All my diagnostics seemed to indicate that I had proper fuel volume at the rail and the tank was very clean inside, it just leaked at the seam. I also did relocate my TFI. Have you done that as well?

[Ranger Dave]

try dri gas

[milwaukeeace]

I replaced the pump in the tank and it completely solved my problem. My truck would start dying when I'd start it after it was already warmed up. I concluded that it was in fact a fuel issue and went ahead and replaced the pump in the tank. It idled fine, so the fuel pressure was there, but there was no fuel volume. That means the in tank pump, not the rail pump.

Been a week now and absolutely no problem at all. I can't get it to stall out no matter what I do to it, and that's a VERY good thing. Also, I went through the floor to replace the pump. If you get everything lined up right you only need to cut out a panel that's around 6" square. It made the job SO much easier and it was pretty simple to fab up a few bits of sheet metal to screw the panel back in place.

[big j]

yea i just replaced the fuel pump in the tank and it still does it idk what it could be a did putt dry gas in it but only one bottle maybe i should try putting 2 or 3 in im going to go to a junk yard and puill injectors for the truck just for shits and giggles to see if thats the problem somedays it runs fine i can drive it to work no problem other days it stalls and take me now 15 mins to start back up but when its starts it runs fine....still lost on the problem

[Ranger Dave]

yea i just replaced the fuel pump in the tank and it still does it idk what it could be a did putt dry gas in it but only one bottle maybe i should try putting 2 or 3 in im going to go to a junk yard and puill injectors for the truck just for shits and giggles to see if thats the problem somedays it runs fine i can drive it to work no problem other days it stalls and take me now 15 mins to start back up but when its starts it runs fine....still lost on the problem

my 88 did that,changed the fuel pumps,still did it. i changed the computer, all better