I put in a new fuel pump, but the pump is not working.
110

Asked by Daves81 May 04, 2015 at 12:53 AM about the 1994 Nissan Pickup

Question type: Maintenance & Repair

After putting the pump in the tank, and the tank in the truck, pump does not work.
Checked fuse and relay, event checked power at the harness. Removed the tank and
new pump and directly connected the pump to the battery- nothing. Would this accurately
test the pump, direct 12 v to the positive and negative post on the pump? There was only
a slight spark when touching the post, butno noise or vibration. I'm finding it hard to
believe it could be completely defective?

2 Answers
10

95Nissanhdbody answered 4 years ago

I had the same issue, come to find out it's the black ground wire inside the tank/sending unit. I had to take apart the ground wire from the contacts and sand them to take off the corrosion, if it looks corroded it's not making contact and will not send power to the fuel pump. You might even have to splice wire and replace connector. Hope this will hepl.

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Shadetreemechanic2 answered 4 years ago

Checking my ground wire , even though plugged the used pump into harnessand it worked. Now compressed in tank not working. ( idea) check old pump plugged into harness hell it works too.

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