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I put a new fuel pump, fuel pump relay and fuse in it, still not getting fuel to the rail?

Tiny
AARONHEFNER
  • MEMBER
  • 1994 CADILLAC DEVILLE CONCOURS
It was run out of fuel, the old pump was bad, put in a new one along with a relay and fuse, but im still not gettin fuel at the rail, an the pump aint kickin on
Wednesday, October 10th, 2012 AT 5:55 PM

9 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Does the fuel pump fuse have power to both sides of it while cranking the engine over?
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Wednesday, October 10th, 2012 AT 5:58 PM
Tiny
AARONHEFNER
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  • 3 POSTS
It has power to one side, not the other
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Wednesday, October 10th, 2012 AT 6:18 PM
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
If the fuse only has power on 1 side its no good.U may have all this work for nothing.
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Wednesday, October 10th, 2012 AT 6:40 PM
Tiny
AARONHEFNER
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  • 3 POSTS
The fuse is good, and the relay an pump is good, is there anythang else it could be?
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Wednesday, October 10th, 2012 AT 6:55 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
If the fuse is good, there must be power at both sides of it. If you have replaced the fuse, recheck it again. If it is blown again, you have a short somewhere.

If not you would have to trace an open in the circuit from relay to the fuel pump.
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Wednesday, October 10th, 2012 AT 7:02 PM
Tiny
AARONHEFNER
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Well what had happend was the guy let it run out of gas an burnt the pump up, its got me pullin my hair out. So the best thang would be to trace wires back to the pump from the relay?
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Wednesday, October 10th, 2012 AT 7:26 PM
Tiny
KHLOW2008
  • MECHANIC
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If the fuse has blown again, yes. Disconnect the fuel pump connector and test if it blows again or you can use the terminal at fuel pump relay to fuel pump wire to check for continuity to body with fuel pump wire disconnected.
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Wednesday, October 10th, 2012 AT 8:04 PM
Tiny
CADIEMAN
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Sup all khl hit it right on the head ty.1 more thing a fuse can look good and test bad. Gl all
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Wednesday, October 10th, 2012 AT 9:20 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Thanks for the assits guys lets see what they find.
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Wednesday, October 10th, 2012 AT 10:48 PM

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