Question about 2001 Ford F350 Super Duty SuperCab

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Bad fuel pump?

How can i check to see if the fuel pump is not working and is the 2 on these truck?

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  • fire_8 Feb 02, 2009

    I am getting fuel to the bowl that the filter goes in but dont seem to fuel beyond that, there is only one tank and i can hear the pump running, is there a way to test the injector pump or are there any relays for it?



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There is one pump inside each fuel tank, u didn't say if u did or didn't have dual tanks, to check the pump turn the key to run and have someone listen a the filler neck with the gas cap off, u will hear a humming for a few seconds when the key is switched from off to run position, repeat the key cycling a few times to verify your results

Posted on Feb 02, 2009

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With key on to "pump up" system, crack fuel line at filter to see if you have any pressure, if so , ,, maybe your IDM is low on oil, or fuel filter dirty?,

Posted on Feb 15, 2009

  • slikford Feb 15, 2009

    i forgot to add, on the output of the IDM is a small screen filter, check it for doodoo, after that it becomes a electrical circuit problem, i have the best luck with a full schematic ,,, you can trace all wires ,hookups, i got the whole 300 pages downloaded from my local library,


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There is only one fuel pump and one injector pump, to check if you have fuel to the injector pump you need to remove the filter cover on top of the engine, the only way to check fuel pressure on your truck is with a computer

Posted on Feb 02, 2009

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