3406 question

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Shillington, Aug 17, 2016.

  1. Shillington

    Shillington Bobtail Member

    7
    1
    Aug 16, 2016
    Washington
    0
    i have a 1996 KW W900L and I'm experiencing problems with my speedometer and tach. The tach will all of a sudden quit workin or read incorrectly as well as my speedometer. They don't always do this at the same time but it has been getting worse. Not really sure where to start. Any advice work be approached. Thanks in advance
     
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  3. baha

    baha Road Train Member

    4,137
    2,837
    Jul 25, 2013
    ga
    0
    Bad ground from eng. to frame add ground from alt. to frame plus add a ground under dash if you cant clean grounds from cab to frame?
     
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  4. Sharky88

    Sharky88 Heavy Load Member

    715
    851
    Sep 25, 2013
    0
    What baha said or it could be the cluster is going bad. Had one on a truck I owned did the same thing.
     
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