Volvo vnl ULTRASHIFT(2 pedals) stupid issue,please help

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by carsrki, Jun 21, 2018.

  1. carsrki

    carsrki Bobtail Member

    5
    0
    Jun 21, 2018
    0
    volvo vnl d12 2007 Ultrashift transmission , last 6 VIN 444 220 ..

    transmission working perfectly fine while being driven, once when you stop,put to neutral and want to put in gear again, truck get confused,making beeping noice and and do not wanting to put in gear . sometimes you need to keep brake pressed for a few minutes(from 2 minutes to 1 hour) so it can put in 1st gear.

    If you are on little down hill you can let truck rolling in neutral and press D button when you are going 5mph and he will switch to gear without problem.
    i loose every day 2-3 hours with this thing,many times i was stuck on middle of intersection!

    it is not helping taking batteries off,restart with board computer or anything else..

    replaced 6 speed sensors, replaced harness and replaced Range valve. still same issue

    It feels more that it is some kind or electronic issue more than mechanical but i am not sure

    Please respond if you know about this type of truck issue
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Goodysnap

    Goodysnap Road Train Member

    3,753
    9,141
    Jul 12, 2017
    0
    XY shifter? Does it throw a service light when it wont shift into gear? If so have you had it hooked up to read any codes. The other thought is that maybe the inertia brake may not be slowing the input shaft enough to allow for gear engagement. How bout the clutch? Might not be releasing fully or staying partially engaged.

    Get it to someone that know the trans that can get it hooked up and make it act up for them. With this the problem will usually be found in short order.
     
    Brcak108 Thanks this.
  4. carsrki

    carsrki Bobtail Member

    5
    0
    Jun 21, 2018
    0
    No any codes, no any lights, only he is beeping and flashing gear number.. somebody else told me also it can be clutch.. $1800 for parts only !
     
  5. boneebone

    boneebone Road Train Member

    2,297
    2,371
    Mar 13, 2009
    0
    Yank that junk out and install a manual trans.

    The Ultrashift has to be one of the worst autotragic transmissions besides the Eaton AutoShift.
     
  6. AModelCat

    AModelCat Road Train Member

    29,441
    161,895
    Jul 7, 2015
    Canuckistan
    0
    No experience with AMT's but the fact you say that it will go into gear while rolling makes me suspect the clutch might be dragging a bit. Plugging it in to a diagnostic computer should be able to tell you if the transmission is still turning while trying to go into gear.
     
    Goodysnap Thanks this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.