Mechanics

CHEVY FUEL PUMP, SPARK BUT NO FUEL, TRK WONT ST

1991 Chevrolet Blazer

Electrical problem
1991 Chevy Blazer 6 cyl Four Wheel Drive Automatic 160000 miles

At the back of the truck where the sending unit plugs into the wiring harness there is a two wire connection to the fuel pump. When you turn the key to the on position should one wire " gray" be powered for a few seconds and the other be constant or no power, or is that wire for the fuel gauge? I am trying to determine wether my fuel pump is good or not.
Avatar
Scottybkr
March 30, 2008.




The other should be a ground. There should be another connection for the fuel level sender. But the wire that turns on for a few seconds, it sounds like the system is working fine.

Tiny
Rhall77
Mar 31, 2008.


AD