I mount the pump but didn't work. I take it off and jump it and works. Mount it back and don't work. I check relays and fuse, all good. Working now on cheqiing the voltage of the truck terminals.
In need of help.
Wednesday, February 10th, 2016 AT 7:42 AM
6 Replies
WRENCHTECH
MECHANIC
20,758 POSTS
So I guess you never tested for power arriving at the pump before replacing it?
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Wednesday, February 10th, 2016 AT 7:47 AM
RAFAEL MORALES
MEMBER
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Now I did, voltage is 0
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Wednesday, February 10th, 2016 AT 7:49 AM
RAFAEL MORALES
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I check first the relays and fuse
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Wednesday, February 10th, 2016 AT 7:50 AM
WRENCHTECH
MECHANIC
20,758 POSTS
If the voltage was 0, why did you go ahead and replace the pump?
You do realize that only powers for 2 seconds when the key is first turned on and resumes when the computer sees a crank signal.
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Wednesday, February 10th, 2016 AT 8:10 AM
RAFAEL MORALES
MEMBER
4 POSTS
In the first 2 sec is a 2.0v then drop to.8v
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Wednesday, February 10th, 2016 AT 8:26 AM
WRENCHTECH
MECHANIC
20,758 POSTS
Test it with the pump unplugged. It will be either battery voltage or nothing. Make sure you are not reading the fuel gauge.