Why am I not getting power to the fuel pump?

UHSNOEBIRD

MEMBER
1991 GMC TRUCK
V8
AUTOMATIC
100,000 MILES

This is a new fuel pump and my fuel pump isn't getting any power to it. I have checked the fuses and replaced one relay.
The fuses are good. Thank you

Truck listed above is a Top Kick c7 8 cylinder.

Wednesday, March 24th, 2021 AT 8:02 AM

4 Replies

UHSNOEBIRD

MEMBER
342 POSTS

I forgot to mention the fuel controller was replaced.

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Wednesday, March 24th, 2021 AT 8:09 AM

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

Did you check for power to the fuel solenoid? Check it with the key in the on position.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Roy

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Wednesday, March 24th, 2021 AT 9:53 AM

UHSNOEBIRD

MEMBER
342 POSTS

Mine is gas and a (TBI) throttle body injection carburetor.

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Wednesday, March 31st, 2021 AT 7:03 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

In the picture you attached, you need to verify the solenoid is opening allowing fuel. Check for power to the solenoid with the key on and cranking.

Roy

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