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Fuel Tank sender

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  • John M.
    Expired
    • January 1, 1998
    • 813

    Fuel Tank sender

    Can someone give me the nominal resistance range of the rheostat in the sender. I'm building a circuit to test fuel gages. Thanks
  • Wayne C.
    Very Frequent User
    • November 1, 1978
    • 289

    #2
    0 ohms empty, 90 ohms full *NM*

    Comment

    • John H.
      Beyond Control Poster
      • December 1, 1997
      • 16513

      #3
      Re: Fuel Tank sender

      Radio Shack has a 0-100 ohm variable potentiometer (a/k/a volume control) for five bucks that makes a great diagnostic substitute for a fuel gauge sending unit; if they don't have one hanging on the wall, they can order it from the catalog. Also works great for determining additional resistance required to make a temp gauge read correctly, although the gauge will no longer be linear across its range with "calibration" resistance added.

      Comment

      • Gene #39090

        #4
        Re: 0 ohms empty, 90 ohms full

        OK I give up, how do you measure the resistance on the fuel gage sender? I know it should be 0 to 90 ohm but does it have to be measured with a John Fluke meter that I do not have? My 24 gallon tank has never worked right so I peened the bad connection (resistance read zero almost all the time) on the wire connection on the sender. I measured mine with a standard (cheep) meter and could barely see any change from one end to the other, like 1 ohm to about 3 ohms but the gage started working, holding the sender in my hand with the sender hooked up to the gage. The gage read about 1/8 tank on the bottom and barely above full with the float at the full position. Any help is appreciated.
        Gene
        fuelie1962@aol.com

        Comment

        • Gary Cederman

          #5

          Comment

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