1997 Chevy Cheyenne Fuel delivery

NAVARRETE068

MEMBER
1997 CHEVROLET CHEYENNE
6 CYL
2WD
AUTOMATIC
125,326 MILES

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.

3 Replies

JDL

MECHANIC
16,098 POSTS

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.

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Saturday, February 14th, 2009 AT 10:28 AM

NAVARRETE068

MEMBER
6 POSTS

Where is the ecm b fuse located

ive checkd the wiring from the pump to the fuse box.

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Saturday, February 21st, 2009 AT 5:05 PM

JDL

MECHANIC
16,098 POSTS

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.

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Sunday, February 22nd, 2009 AT 10:32 AM