No power to fuel pump relay

Tiny
DAVELAWRENZ
  • MEMBER
  • 1 POST
  • 1998 CADILLAC DEVILLE

Electrical problem V8 Two Wheel Drive Automatic

power works for a few seconds on one side but other side has no power.

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Thursday, October 1st, 2009 AT 9:55 PM

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Tiny
FACTORYJACK
  • EXPERT
  • 4,228 POSTS

The few seconds is normal as the ECM controls the relay to build rail pressure in anticipation of cranking. Check the fuel pump fuse in the underhood fuse center. If it is blown, you could have a short, but it is more probable that the fuel pump has high resistance and is drawing too many amps and opened the fuse.

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Tuesday, October 6th, 2009 AT 12:46 AM
Tiny
MARLYMAR510
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I changed the fuel pump relay and fuse and I m still not getting any fire to the plug ! What should I do

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Thursday, December 28th, 2017 AT 2:36 PM
Tiny
KEN
  • ADMIN
  • 13,857 POSTS

Hello,

Here is a wiring diagram that show where the power is coming from which looks like a fuse. Here is a guide on how to check 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.

Cheers, Ken

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Sunday, December 31st, 2017 AT 1:35 PM

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