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N0 spark, no fuel, fp relay doesnt energize.

Tiny
HEATHWATSON
  • MEMBER
  • 1999 GMC SONOMA
  • 108 MILES
N0 spark, no fuel, fp relay doesnt energize, all fuses are good
Tuesday, October 23rd, 2012 AT 6:34 PM

3 Replies

Tiny
JDL
  • 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?
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Tuesday, October 23rd, 2012 AT 6:46 PM
Tiny
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).
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Tuesday, October 23rd, 2012 AT 6:54 PM
Tiny
JDL
  • 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?
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Tuesday, October 23rd, 2012 AT 10:47 PM

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