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    ted bond's Avatar
    ted bond Posts: 1, Reputation: 1
    New Member
     
    #1

    Apr 5, 2009, 10:17 AM
    Harley davidson low fuel light
    My low fuel light comes on when tank is full not when tank is low, why?
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
     
    #2

    Apr 6, 2009, 05:07 AM

    Your fuel sensor has a variable resistance, Empty, full and anything in between has a known value. If it works by a float, it may be binding.
    Without knowing the value, You could measure resistance when the tank is empty, fill tank, measure resistance again?
    Shop manual is a good investment.

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