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Fuel gauge on a '64

Discussion in 'Early CJ5 and CJ6 Tech' started by Wyo Eeyore, Jul 14, 2008.

  1. Jul 14, 2008
    Wyo Eeyore

    Wyo Eeyore Member

    Eastern WY next...
    Joined:
    Feb 22, 2006
    Messages:
    75
    I had problems with the original gauge cluster. Replaced it twice then made my CJ-5 a gauge plate like a M38A1. That was several years ago. Now the fuel gauge is swinging from full to mt as we go down the road even with a full tank. I have checked the terminals and they are tight. The sending unit is 44 years old and is my guess for the problem. Any one have any other ideas?
     
  2. Jul 15, 2008
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2022 Sponsor 2021 Sponsor 2020 Sponsor

    cordele, Ga.
    Joined:
    Mar 29, 2007
    Messages:
    5,840
    Do you have a seperate ground wire running from the tank to frame? Sometimes those tanks will build up rust etc and insulate themselves from a good ground, and bouncing down the road can cause this needle fluctuation. Since its happening on full tank, that would nearly rule out sender.
     
  3. Jul 15, 2008
    aallison

    aallison 74 cj6, 76 cj5. Has anyone seen my screwdriver?

    Green Cove...
    Joined:
    Nov 24, 2006
    Messages:
    1,922
    I'd guess a wireing issue. As walt said, check the grounds.............
     
  4. Jul 15, 2008
    Wyo Eeyore

    Wyo Eeyore Member

    Eastern WY next...
    Joined:
    Feb 22, 2006
    Messages:
    75
    Thanks! I will try the seperate ground wire idea. As soon as I can. Thanks again.
     
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