n0 spark, no fuel, fp relay doesnt energize, all fuses are good
Oct 23, 2012 at 6:34 PM
1999 Gmc Sonoma N0 Spark Fuel Fp Relay Doesnt Energize Fuses Good
1999 GMC SONOMA
HEATHWATSON
- MEMBER
- 2 POSTS
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JDL
- ✓ASE Certified 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 6:46 PM
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 6:54 PM
JDL
- ✓ASE Certified 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?
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 10:47 PM
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