1999 mini freighliner trans trouble

Discussion in 'Class A / Diesel Pushers' started by mick24712, Apr 10, 2009.

  1. mick24712

    mick24712 New Member

    when going down the road my truck has started to jump from drive to nutral it has a allision 6 speed automatic . can anyone give me some direction as to what to do :cool:
     
  2. LEN

    LEN Senior Member

    Re: 1999 mini freighliner trans trouble

    Welcome,
    Have you checked the obvious, oil level, temperature. It could be the cabling to the ECM, the ribbon cables can come loose or not work correctly. Unplug and replug might work. You can press buttons on the ECM and get an error code if there is one. Go to the Allison site to find codes for your transmission. Also do a search on Allison, there is a long tread that might give some insight.

    LEN
     
  3. dbarton291

    dbarton291 Senior Member

    RE: 1999 mini freighliner trans trouble

    What does the transmission shift selector display say when this happens?

    Does the check trans light come on when it happens?
     
  4. mick24712

    mick24712 New Member

    Re: 1999 mini freighliner trans trouble

    yes it does the check trans light comes on after the oil gets warm
     
  5. dbarton291

    dbarton291 Senior Member

    Re: 1999 mini freighliner trans trouble


    With the trans feeling it's going into neutral, and a check trans light on as soon as the trans is warm, I recommend you go to www.allisontransmission.com

    Go to the service locator tab, and find an authorized Allison outlet close to you to look at the vehicle.
     

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