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fuel gauge over full

Discussion in 'The Garage' started by purplehavoc, Dec 19, 2006.

  1. purplehavoc

    purplehavoc Registered Member

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    Location:
    ontario,canada
    Hey everyone!
    I know this isn't a blazer but hoped someone could help me.
    Been putting an 86 K10 togther and i removed the pass side gas tank and will just run the drivers side.
    When i fired the truck up the other day,my gauge is reading past full.There isn't much fuel in the tank and it worked fine before.
    Checked wires to tank,and they seem fine.
    Anyone help me with what i'am missing here.
    Thanks.
     
  2. dremu

    dremu Officious Thread Derailer Premium Member

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    Open circuit somewhere. Switch could be bad, sender wire could be disconnected, the ground wire from the sender to the frame could be busted or grimy.

    -- A
     
  3. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    The wire you took off when you removed the tank is touching ground somewhere. GM sending units work on a resistance to ground and when the wire is touched to ground the guage will peg past full and stay there.
     

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