biggest pump

[silver_pilate]

I'm in the middle of diagnosing the same problem. The car runs for about 45-60 minutes, and then it stumbles and dies in a matter of 5-10 seconds. After sitting for a couple of hours or less, it starts up and runs fine. So I figure it is likely heat related. My fuel pump is a 190 lph pump that I put in about 1 year ago, so it's unlikely the problem for me (I hope).

Here's what I'm going to do. I'm going to take a fuel pressure guage and strap it to my windshield wiper so I can see what the pressure's doing. Then I'm going to run it until it dies and watch the guage. If there's pressure there, then it's not the fuel pump or circuit. Probably in the ignition somewhere, and I'll replace the ignition module and see what happens. If pressure drops to nothing, I'll try replacing the fuel pump relay. Hopefully one of those two will fix my problem. Otherwise, I'll keep looking.

Anyway, you might check your fuel pump relay underneath the driver's side seat. They get pretty warm after you drive a while and might be the problem.

Keep guessing and plugging away. I'll let you know what I find tomorrow.

--nathan