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fuel problem 91 gmc

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New User

Sep 4, 2008, 12:56 PM

Post #1 of 3 (2323 views)
fuel problem 91 gmc Sign In

I have a 1991 gmc truck with 5.7 throttle body injection. The problem is when I pour gas in carb the engine will run till that gas is gone. I have checked the pump and filter and they are fine. The line to carb is clear. I think it is something electronic. It sometimes starts then will just quit in a short time. Any ideas on troubleshooting and repair. Thank you!!!

(This post was edited by riverdog on Sep 4, 2008, 2:36 PM)

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way2old profile image

Sep 4, 2008, 1:20 PM

Post #2 of 3 (2317 views)
Re: fuel problem 91 gmc Sign In

Have you checked the fuses? There are 2 that are marked ECM1 and ECM2.

Being way2old is why I need help from younger minds

New User

Sep 4, 2008, 2:32 PM

Post #3 of 3 (2315 views)
Re: fuel problem 91 gmc Sign In

Yes I have thank you. It starts once in awhile then dies.

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