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18 speed Auto Shift, anything to be aware of?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Mr. Cob, Nov 27, 2017.

  1. Nov 27, 2017 #1
    Mr. Cob

    Mr. Cob Light Load Member

    264
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    Dec 31, 2013
    Wet side of the mountains, WA State
    0
    Howdy All,

    I found a truck I may be interested in, it has a 3 pedal, 18 speed, Auto Shift, transmission in it, anything I should be aware of, possible problems, things to look for? Thanks for any information you can share.

    Dave
     
    Mr. Cob, Nov 27, 2017
    Mr. Cob, Nov 27, 2017
    #1
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  3. Nov 28, 2017 #2
    S M D

    S M D Road Train Member

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    Mar 15, 2012
    sacramento ca
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    You can throw a stick in it for a few bucks. Most likely.
     
    S M D, Nov 28, 2017
    S M D, Nov 28, 2017
    #2
  4. Nov 28, 2017 #3
    Brandt

    Brandt Road Train Member

    4,065
    5,343
    Sep 17, 2012
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    If it's Eaton or sounds like it and older auto shift. They had trouble when they first came out. The computers could mess up and not shift gears.

    The new modern Auto shift transmission are way better. The engine and transmission work together. The can talk to each other and that give you a much better setup. The transmission can tell the engine to turn on engine brakes when shifting in low gears. So the transmission doesn't miss a gear. The new DT12 transmission has GPS locations of the big hills. So it won't keep shifting gear when climbing a hill.
     
    Brandt, Nov 28, 2017
    Brandt, Nov 28, 2017
    #3
  5. Nov 28, 2017 #4
    Mr. Cob

    Mr. Cob Light Load Member

    264
    376
    Dec 31, 2013
    Wet side of the mountains, WA State
    0
    Howdy All,
    The transmission is Gen2, Eaton-Fuller, Auto Shift. I have the 10 speed version in my Freightliner and it works very well. I am asking questions about the 18 speed version of this transmission as I had no idea they made an 18 speed version. I have driven the newer two pedal transmissions and didn't like them, I like having the clutch pedal makes it much easier to creep up on the pin or get started on slippery stuff.
    Dave
     
    Mr. Cob, Nov 28, 2017
    Mr. Cob, Nov 28, 2017
    #4
  7. Feb 13, 2021 #5
    Roger Marsh

    Roger Marsh Bobtail Member

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    Feb 13, 2021
    0
     
    Roger Marsh, Feb 13, 2021
    Roger Marsh, Feb 13, 2021
    #5
  8. Feb 13, 2021 #6
    Roger Marsh

    Roger Marsh Bobtail Member

    3
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    Feb 13, 2021
    0
     
    Roger Marsh, Feb 13, 2021
    Roger Marsh, Feb 13, 2021
    #6
  9. Feb 13, 2021 #7
    Roger Marsh

    Roger Marsh Bobtail Member

    3
    0
    Feb 13, 2021
    0
    I have a 18 speed auto shift Eaton fuller it want down shift stuck in high gear.It will go in reverse also if you turn the key without the clutch it will try to start.If you don't have the clutch in when you try to start the transmission will try to turn
     
    Roger Marsh, Feb 13, 2021
    Roger Marsh, Feb 13, 2021
    #7
  10. Feb 14, 2021 #8
    Mr. Cob

    Mr. Cob Light Load Member

    264
    376
    Dec 31, 2013
    Wet side of the mountains, WA State
    0
    Howdy All,

    I guess I should update this thread. I bought the truck have driven it 40,000 miles in the last three years love the 18 speed Auto-Shift it has worked perfectly the truck was never in fleet service I am the third owner and have been in contact with the widow of the man who bought the truck when new they were team drivers.

    Dave
     
    Mr. Cob, Feb 14, 2021
    Mr. Cob, Feb 14, 2021
    #8
    Brandt and Flint1 Thank this.
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