ghostws6

i have a 2002 ws6 i just rebuilt and went to turn it over all i got was cranking all the fuses were fine relay good but didnt hear the pump priming so replaced it with at walbro 255 after i relpaced it still not priming so checked everything again and come to find out that i have no power to the pump but i still have power to the relay does anyone know where else i could look cause i am lost right now

Bramlok

iTrader: (7)

If you have power going into the relay, you need to check to see if you have power coming out of it. They don't go bad that often but you can try swapping it with another one. There are several in the fuse box that are the same.

Also, the fuel pump relay may not get be getting a signal from the PCM to activate it. If that's the case, you may have a VATS problem.

And if you just rebuilt the motor you may have forgot to connect something? There are a few ground straps behind the heads you may want to check.

ghostws6

grounds 3 of them right i forgot them at first but it is very possible i connected them at the wrong place should they be to the body or the motor

crainholio

iTrader: (2)

The harness grounds bolt to the back of the driver-side head, and are critical...the PCM sends 12VDC to close the relay, and the other side of the relay pull circuit is a permanent ground. Without that ground, the relay won't close and the fuel pump gets no voltage.

ghostws6

ok so that would be my issue then and to clarify is it all 3 grounds bolt to the back of the driver head or am i understanding it wrong

Bramlok

iTrader: (7)

That is correct. All 3 grounds bolt to the back of the driver side cylinder head.

Where did you have them bolted to?

boostit5.3

iTrader: (3)

is the solenoid clicking?