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1991 379 speedometer

Discussion in 'Peterbilt Forum' started by mtmval, Dec 28, 2014.

  1. Dec 28, 2014 #1
    mtmval

    mtmval Bobtail Member

    5
    0
    Jan 8, 2011
    0
    I use this truck for grain hauling and farm use. When I bought it, the speedo didn't work. I replaced the sensor on the tail shaft and it still didn't work, then one day driving down the road it came on and worked flawlessly for two years. We didn't use the truck much and it sat for about four months...speedo quit again. 1991 379 with cummins n14celect 460e with 15 spd. Any help? Thanks. Tach is also recently doa. It tries to move but won't go above 300 rpm. Thanks for any thoughts.
     
    mtmval, Dec 28, 2014
    mtmval, Dec 28, 2014
    #1
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  3. Dec 29, 2014 #2
    Dpimpact

    Dpimpact Bobtail Member

    7
    1
    Dec 26, 2014
    Barrhead, Alberta
    0
    Sometimes it's just the speedo itself...had that problem, went to my local wrecker and they let me swap mine with another used one to see if it worked, when it did I bought it.
     
    Dpimpact, Dec 29, 2014
    Dpimpact, Dec 29, 2014
    #2
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