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1998 Chevy S-10 fuel pressure

Tiny
BIGVOLMAN
  • MEMBER
  • 1998 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • MANUAL
  • 180,000 MILES
I do not have any fuel pressure. I took the fuel pump out and it runs fine hooked up to the battery. I've swapped the relay 3 times, I've inspected the wiring and it all looks good, I've changed the power connector at the pump. I pressed the relief valve on the gas line and there is no pressure, at most a single drop of gas creeps out. My next guess is the PCM. Any help?
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Saturday, February 2nd, 2008 AT 7:58 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have power at the fuel pump connector gray wire for 2secs when key is at On position. If not could be a problem with the computer fuel control relay Check pin out#8.

Also check gray wire at each injector-do you have power?


https://www.2carpros.com/forum/automotive_pictures/12900_fuel_pressure_system_circuit_1.jpg

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Saturday, February 2nd, 2008 AT 11:41 PM

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