1998 Chevy S-10 FUEL PUMP

  • 1998 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • 200,000 MILES
Okay let me start at the begining. A week ago I noticed a bog in the low parts of the gears. 2 days ago I was at at school and I came out and the truck just wanted to crank and crank but would not turn over, so I had it towed home. The next morning I started trouble shooting. I checked the valve on the fuel line next to the throttle body and no pressure. Next I removed the connection at the fuel filter to see if I could get gas to spray out when I turned on the ignition. Nothing. I checked the relay and it was fine. And I looked over all the fuses although I did not see one labeled fuel pump I checked them all. So I figured it must be the fuel pump so I replaced it and im still getting nothing. Someone said fuel pump/oil pressure switch
Do you
have the same problem?
Wednesday, October 29th, 2008 AT 12:49 PM

1 Reply

Hi josephmascola and welcome to 2carpros

When you turn key to run do you hear the fuel pump for 2secs? If not

Check ECM B fuse 20amp. If okay-check the ground circuit to the pump. Fuse and ground okay-could be coming from the computer fuel pump relay control

This is how it works-

When you turn the key to run-the pump comes On for 2secs then the relay de-energizes-this time frame will prime the fuel system, when engine starts cranking and oil pressure is being build up it will close the fuel/oil pressure switch and powers the fuel pump. In that 2secs you should have fuel pressure-if not check the fuel pump again
Was this
Wednesday, October 29th, 2008 AT 1:20 PM

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