Help with Speedometer adjustment.

Discussion in 'Trucks [ Eighteen Wheelers ]' started by mackdaknyfe, May 9, 2010.

  1. North Idaho

    North Idaho Bobtail Member

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    2
    Feb 18, 2020
    0
    Hello, Can you help with speedometer dip switch settings?
    1999 Peterbilt 379, Tires - Toyo M506Z Off Road, Size - 11R24.5, Inflated Dia 44.3, Rear End Ratio 3.58,
     
  2. x1Heavy

    x1Heavy Road Train Member

    34,017
    42,141
    Mar 5, 2016
    White County, Arkansas
    0
    FFE ran 63 on governor but programmed their speedos to show 65 to soothe ruffled feathers, and wonder why tripplanning was off by 10 minutes late to appt. When I bought a GPS which revealed actual 63 I took tractor plus screen shot evidence to shop at Lancaster to have the speedometer recalibrated to be correct 63.

    They told me hush, don't worry about that. Get going yer late already on the next load.

    Reprogramming? HA not happening.
     
  3. Ccennals

    Ccennals Bobtail Member

    2
    0
    Nov 23, 2020
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  4. Ccennals

    Ccennals Bobtail Member

    2
    0
    Nov 23, 2020
    0
    I have a 2001 Freightliner C15 cat 13 speed put a new speedometer in what's the dip code for it. Also add 373 rear 11R 24.5 tires
     
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