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1992 Ford F-250 Question: Fuel pump problem

 

Question

Visitor, 7.5L V8, Cozad, NE, January 11, 2011, 09:28

My fuel pumps I keep putting in my truck in the rear tank are going bad. I have tried motorcraft and airtex fuel pumps, but same problem. Any idea why these pumps are going bad?

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  • Answer #1

    January 11, 2011, 09:33
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     Master

    dirt and debris are the most common reasons for failure. remove the tank and have it completely cleaned out.

    Roy

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  • Answer #2

    verdigo from SCE Small Car Enterprises, January 11, 2011, 12:41
     Enthusiast

    Are you sure the pumps are bad? If not you might try powering one up out of the truck. Some times fuel pump relays heat up and work intermittantly.

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  • Answer #3

    January 11, 2011, 21:30
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     Master

    Check your wiring harnesses also. They are known for issues, and even had a TSB for harness pigtail replacement on similar models. Look for damaged connectors and corroded terminals.

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