Question about Ford F-350

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94 f350 diesel pickup dual tanks the fuel gauge is clear past full all the time even if you switch tanks

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  • Anonymous Jan 26, 2009

    someone told me it's the switch, is that psoable? How can I tell?

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  • Ford Master
  • 6,674 Answers

I'd look for a bad or broken ground somewhere, either feeding both tanks, or the gauge itself, but start at the sending units and see if there is a common ground wire coming forward & joining into one.

Posted on Dec 21, 2008

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