2003 freightliner classic 12.7 Detroit cruise control blimps please help

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Killinmiles93, Dec 27, 2023.

  1. Killinmiles93

    Killinmiles93 Bobtail Member

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    Dec 13, 2017
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    When on cruise control at 70 mph the trucks cruise control will blimp and buck for a second and seems to be worse at lower speeds ( isn’t constant just happens intermittently), have already replaced the speedometer and vss sensor on the back of the transmission. Also even with the new Speedometer the guage will jump around a lil but cruising down the road and will jump around at idle and add miles to the odometer even at idle, plz help!
     
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  3. Crude Truckin'

    Crude Truckin' Alien Spacecraft

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    North Dakota, Eh?
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  4. Killinmiles93

    Killinmiles93 Bobtail Member

    24
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    Dec 13, 2017
    0
    Already replaced the speed sensor on the back of housing on the trans
     
    Crude Truckin' Thanks this.
  5. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Yoke nut is loose on the back of the trans, allowing the pulse wheel to vibrate at idle, which makes miles. Also keeps you VSG from working, and causes cruise to kick out
     
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