Mechanics

NEED HELP DETERMINING WHY MY FUEL PUMP KEEPS FAILING

1991 Nissan Pathfinder • 100,000 miles

My fuel pump keeps failing and i'm not sure y i'm currently removing the tank and cleaning it out to eliminate contaminated fuel as the problem but am now thinking its an electrical problem.

When I bought the vehicle the fuel pump was just replaced and after a month or so I had to replace it and the fuel pump housing because of a fried connection on the top(can provide picture if needed).

I am wondering if I have a bad wire harness but am not sure how to test that.

I was considering bypassing the harness completely but am not sure if that is possible I don't know if my pump requires less or more volts then the battery puts out.

Any help on this would be greatly appreciated.
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Scottscott07
August 4, 2012.




No bypassing.

The electrical issue is the reason for your failures. Resolve those issues with a new complete unit, not a build a pump, drop the tank have all the crap flushed out and you will have no worries

Roy
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Ok what unit are u talking about the wire harness or the fuel pump and housing.

Because I was told at the parts store that I cant buy a new fuel pump housing I had to find a used one and could only buy a fuel pump

Tiny
Scottscott07
Aug 4, 2012.
Go to the dealer. It will be more money but well worth it.

Used is a bad idea. Parts stores dont carry complete units.

Roy

Ok ill try it thanks for the tip very much apreciated

Tiny
Scottscott07
Aug 4, 2012.

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