1999 Gmc Sonoma N0 Spark Fuel Fp Relay Doesnt Energize Fuses Good

1999 GMC SONOMA
108 MILES
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HEATHWATSON
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  • 2 POSTS
n0 spark, no fuel, fp relay doesnt energize, all fuses are good
Oct 23, 2012 at 11:34 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Any applicable codes? Can you hear the fuel pump run when first turn the key on, no crank? Can you check for rpm signal? Battery has a full charge, all connections clean and tight. Did you check for voltage anywhere?
Oct 23, 2012 at 11:46 AM
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HEATHWATSON
  • MEMBER
  • 2 POSTS
knock sensor code, No the fuel pump gets no power at pump, and relay doesnt energize. No spark either. Good battery(new).
Oct 23, 2012 at 11:54 AM
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JDL
  • ✓Experienced Mechanic
  • 16,098 POSTS
Check ecm B fuse, 20 amp, underhood fuse block. Not only check the fuse, check voltage at fuse circuit.

With key on, do you have ref voltage at the tps, or any sensor that uses a ref voltage? I just thought the tps might be the easiest to get at. I'm not sure of engine litre size?

Oct 23, 2012 at 3:47 PM
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