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1991 S10 fuel pump issue please help
02-17-2014, 01:01 PM (This post was last modified: 02-17-2014 01:19 PM by ericbohn1972.)
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1991 S10 fuel pump issue please help
I have a 91 S10. I jump started my daughter's car and the truck went dead as soon as turned the key in her car. At first I thought the fuel went because I was not getting any fuel at the throttle body. So I checked the fuses and ended up replacing the fuel pump and relay. This did not fix my problem. While checking things I discovered my injectors did not have any power. I replaced the computer and now the injectors have power but the fuel pump still doesn't work. I then decided to replace the ignition module and that did not help either. I have a constant 8.5 volts going to the fuel pump with the key on. The pump will run if I run a jumper wire straight from the battery. I am scratching my trying to figure this out. Then yesterday I discovered my headlights are not working. All fuses are good and I cleaned the battery ground on both ends along with the headlight ground. Does anybody have an idea what i should check next? Any idea will be helpful. I also replace the alternator because I had it tested and it showed it had a bad regulator.
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1991 S10 fuel pump issue please help - ericbohn1972 - 02-17-2014 01:01 PM

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