C1 57 fuel gage - NCRS Discussion Boards

C1 57 fuel gage

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  • Verle R.
    Extremely Frequent Poster
    • March 1, 1989
    • 1163

    C1 57 fuel gage

    The fuel gage has started fluctuating wildly when the tank is something less than full. I know it did not do this before.

    I assume the damping is in/on the back of the gage, what should I look for.

    Thank you,

    Verle
  • Ed Jennings

    #2
    Re: C1 57 fuel gage

    First check the sending unit in the tank and the connections. Also, it wouldn't hurt to add a dedicated ground to the sending unit flange.

    Comment

    • Roy B.
      Expired
      • February 1, 1975
      • 7044

      #3
      Re: C1 57 fuel gage

      The rheostat inside the sender can get shellac build up on the wires, which in turn you loss a ground connection, but can be opened and cleaned if your problem is not a ground wire or bad gage.

      Comment

      • Verle R.
        Extremely Frequent Poster
        • March 1, 1989
        • 1163

        #4
        Re: C1 57 fuel gage

        I installed a new tank and new sending unit last spring. It has worked properly until recently.

        I will check the ground from the sending unit.

        The fluctuation is directly related to the sloshing of gas in the tank. If I turn the switch on after the car has been setting still for a while the gage is steady.

        Verle

        Comment

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