1987 GMC

  • Tiny
  • Kstraub
  • 1987 GMC

Electrical problem
1987 Other GMC Models V8 Four Wheel Drive Automatic 100000 miles

87 4x4 suburban won't start has spark, fuel pressure, injectors have been cleaned, truck will start if fuel is poured down the TBI and then dies. Pulled injector plugs to check voltage both plugs pulse from 0 to.02 volts. Checked all fuses all seem to be good. What am I missing?

Do you
have the same problem?
Thursday, October 16th, 2008 AT 10:49 PM

1 Reply

  • Tiny
  • Jack42

Those injectors should be getting 12 volts from the ECM-1 fuse. If not, there is a possiblility that the ignition switch isnt feeding the fuse. Need to get a test light and see if there is power on either side of the fuse

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Thursday, October 16th, 2008 AT 11:37 PM

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