Troubleshooting

Tiny
WYKLE42548
  • MEMBER
  • 1987 GMC S15
  • 6 CYL
  • 4WD
  • MANUAL
  • 98,000 MILES
Fuel pump on 87 gmc s15 troubleshooting
Saturday, November 20th, 2010 AT 1:54 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Just to add, there should be a fuel pump test connector, under the hood. Driverside fender lining. Tan wire with white tracer, electrical connector, nothing plugged into it. If you use a jumper wire with inline fuse to battery +, the pump should run, no need to use the key. In the diagram c8 is the test connector, #3 is the fuel pump relay.
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Saturday, November 20th, 2010 AT 2:31 PM

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