fuel pump runs out of tank but quits when installed

Asked by Oct 02, 2014 at 10:29 PM about the 1991 Chevrolet C/K 2500 Silverado Extended Cab SB 4WD

Question type: Maintenance & Repair

fuel pump runs out of tank but quits when installed

3 Answers


Are you testing it just by hot wiring or,are are you hooking it to the wire,s at the pump connector?


Most likely a bad pump motor, it will run with no load but when a load is applied it can't pull it. I would recommend getting the entire fuel pump module assembly while your already there.

by hooking it up to the plug for it. the guy i got the truck from said he trouble from the computer before. ive got another one here, wasnt sure what i have to do.

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