1997 Chevy Cheyenne Fuel delivery

1997 CHEVROLET CHEYENNE
125,326 MILES • 6 CYL • 2WD • AUTOMATIC
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NAVARRETE068
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Engine: 4.3 Vortec 6cyl

why dont I get power to the fuel pump?

Is there a fuse that Im Not Finding?



Ive changed the fuel pump relay and the fuel pump.

I can get the pump to work if I jump the power line

into the pump ( The Grey/White wire).

HAYNES Manual dosnt specify this motor.
Feb 14, 2009 at 10:17 AM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Did you check the ecm B fuse in the underhood electrical center. I believe that fuse circuit goes hot when you turn the key on. Also there shows to be an oil pressure switch in the fuel pump circuit, once you crank it enough to bring up oil pressure, the pump should run, there should be pressure. That doesn't mean the injectors will pulse.
Feb 14, 2009 at 10:28 AM
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NAVARRETE068
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  • 6 POSTS
Where is the ecm b fuse located

ive checkd the wiring from the pump to the fuse box.
Feb 21, 2009 at 5:05 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
The info I looked at was for a 97 1500, owners manual. Look in the under-hood fuse box or relay center, driver side rear, close to the brake fluid reservoir. It's possible that is a relay pack instead of a box.
Feb 22, 2009 at 10:32 AM
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