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Bad gas gauge

Discussion in 'Chevy Trucks' started by JTChevy, Jan 14, 2002.

  1. JTChevy

    JTChevy Junior Member
    Messages: 15

    Need help folks. I have a "77" 4x4 chevy P-U. The problem is the gas gauge willn't go back down to E. I feel that it's a bad gound. Where should I look. Also the fuel pump is not pumping fuel up to the fuel filter. Thanks.
  2. reallyrusty

    reallyrusty Member
    Messages: 71

    my first thought would be to try the sending unit. Before droping the tank to get the sender out, try to remove the wires and test it with another sending unit. If thats not available you can buy a 90 ohm resistor and check it with that ( the sender is variable from 0-90). hope that helps
  3. plowking35

    plowking35 2000 Club Member
    from SE CT
    Messages: 2,923

    I have found it is usually the ground wire attached to the top of the sending unit. A little wiggle usually sovles the problem. It is very hard to get to, a long screwdriver between the bed and cab should do it.