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Fuel pump on 1995 GMC Jimmy not working?

Tiny
ARNOLD LEITZ
  • MEMBER
  • 1995 GMC JIMMY
  • 6 CYL
Fuel pump on 1995 gmc jimmy not working. Have a drop of 3 volts at pump connection when disconnected from pump, what amount of voltage drop would be acceptable at pump.
Friday, December 31st, 2010 AT 2:06 AM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

If you have 12v to the pump and it is not functioning, then the pump is likely faulty and will need replacement.
Have you tried to jump the pump by applying 12V power to it? Just in case you have faulty wiring, this will be able to tell you that.

If there is not sufficient voltage to the pump it will not turn on. That could be due to bad wiring. Corrosion or a short can create this issue.

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.
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Wednesday, January 19th, 2022 AT 7:37 PM

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