splitter valve/fuel filter gauge?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Allan Decker, Jan 23, 2014.

  1. Jan 23, 2014 #1
    Allan Decker

    Allan Decker Bobtail Member

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    Nov 19, 2009
    montz, la
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    Splitter valve on my 05 379 is leaking and needs to be changed, can that cause my fuel filter gauge to fluctuate? My fuel filter gauge moves quite a bit when shifting through gears, sort of as if with the movement of the diesel in my tanks. It moves more as I get closer to empty. Any ideas? TIA
     
    Allan Decker, Jan 23, 2014
    Allan Decker, Jan 23, 2014
    #1
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  3. Jan 24, 2014 #2
    1johnb

    1johnb Medium Load Member

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    Jun 13, 2012
    New Paris Ohio
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    Valve needs replaced. But also probably needs a sending unit also. The splitter won't affect the gauge like that. I have had the valve malfunction and fill one tank more than the other side.
     
    1johnb, Jan 24, 2014
    1johnb, Jan 24, 2014
    #2
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  4. Jan 24, 2014 #3
    special-k

    special-k Road Train Member

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    Southern Ontario Canada
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    Fuel filter gauge should be mechanical. If the splitter is allowing it to suck air on the supply side the gauge might fluctuate. If you have a fuel pressure gauge you might see it there also.
     
    special-k, Jan 24, 2014
    special-k, Jan 24, 2014
    #3
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  5. Jan 24, 2014 #4
    1johnb

    1johnb Medium Load Member

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    New Paris Ohio
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    Sorry didn't see the filter part of the gauge . I still don't think that they are related. It is possible the gauge is electric, they changed in 05/06 not sure .
     
    1johnb, Jan 24, 2014
    1johnb, Jan 24, 2014
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  7. Jan 24, 2014 #5
    1johnb

    1johnb Medium Load Member

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    Splitter is return side not suction. If the tee on the suction is leaking that would be possible. They are at the same location. I don't recall having a suction tee leak but anything is possible.
    I
     
    1johnb, Jan 24, 2014
    1johnb, Jan 24, 2014
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  8. Jan 24, 2014 #6
    1johnb

    1johnb Medium Load Member

    542
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    Jun 13, 2012
    New Paris Ohio
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    Splitter is return side not suction. If the tee on the suction is leaking that would be possible. They are at the same location. I don't recall having a suction tee leak but anything is possible.
    I
     
    1johnb, Jan 24, 2014
    1johnb, Jan 24, 2014
    #6
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