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No power to fuel pump

Tiny
TED SAHM
  • MEMBER
  • 2003 BUICK RENDEZVOUS
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 200,013 MILES
No power to fuel pump. Pump does work, wiring harness is good. Replaced fuse and relay. Cleaned connectors at main harness connector. Replacing connector would mean splicing wires. How or what else can I do?
Saturday, June 3rd, 2017 AT 1:09 PM

5 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Hello,

It sounds like you are losing power at the relay or the relay is not getting energized. Here are the wiring diagrams for the fuel pump and engine so you can see how the system works and a guide to help you test for power.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.

Cheers
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Saturday, June 3rd, 2017 AT 2:44 PM
Tiny
TED SAHM
  • MEMBER
  • 3 POSTS
Used the pump wire harness and jumped from good battery. Pump squirted nicely and hummed beautifully.
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Saturday, June 3rd, 2017 AT 5:15 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Can you please check fuse #1 for power? Here is a guide and the location.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (Below). Please let us know what you find.
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Saturday, June 3rd, 2017 AT 5:25 PM
Tiny
TED SAHM
  • MEMBER
  • 3 POSTS
Yep the fuse was melted! I got a new fuse and cleaned up the connections everything works great! I love this site.
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Sunday, June 4th, 2017 AT 3:33 AM
Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
Nice work, we are here to help, please use 2CarPros anytime.
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Monday, June 5th, 2017 AT 8:21 PM

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