autoshift will not go into any gears no error code, just flashes

Discussion in 'Trucks [ Eighteen Wheelers ]' started by TowHaul, Oct 17, 2017.

  1. Larry finds

    Larry finds Bobtail Member

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    Sep 3, 2018
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    Truck has service light flashing on 2016 peterbilt...somtimes the truck wont turn or...is there a code to fix this, or what is the problem?
     
  2. CAPETOWN

    CAPETOWN Bobtail Member

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    Download the eaton clutch adjustment pdf. It shows how to get it to adjust
     
  3. Larry finds

    Larry finds Bobtail Member

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    Sep 3, 2018
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    I have a 2016 peterbilt automatic with a paccar engine..the service light on the clutch is flashing and i can crank the truck but it wont start (turn over). Theres gas in it and the battery os showing good there is a code flashing 25 something..what can i do to fix this?
     
  4. Oldironfan

    Oldironfan Road Train Member

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    I'm sorry but this is why you buy manual transmissions.
     
    boneebone Thanks this.
  5. bonous

    bonous Light Load Member

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    Which shop did you used for that price?
     
    Jazz1 Thanks this.
  6. Jazz1

    Jazz1 Road Train Member

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    For $700 they likely never even went under the truck:D
    Service writer buying the next round!
     
    flood Thanks this.
  7. shmyreal

    shmyreal Bobtail Member

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    I got a similar problem. My transmission wouldn't go into gear with a running engine, but I can hear it switching gear when just an ignition on. I got 2 fault codes 27 and 64. The truck has been towed to a dealer. Dealer tried to replace ECA but this didn't resolve the issue. Now he is planning to replace clutch and XY shifter. The truck is 6 month old with 59000 miles on it.
     
  8. flood

    flood Road Train Member

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    that noise you hear when you turn the key on is the X Y shifter finding N
     
  9. shmyreal

    shmyreal Bobtail Member

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    Is it possible for Clutch Disk to go bad on only 59000 miles? I never abused the clutch...
     
    Last edited: Dec 22, 2018
  10. Heavyd

    Heavyd Road Train Member

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    If the truck is still under warranty, and this is an Eaton product, the dealer is only doing what Eaton tells them to do. Code 27 is when the trans has opened the clutch, but detects the trans is still spinning with the engine. Code 64 is an electrical problem with the electronic clutch actuator. It breaks down to three different sub-codes of either loss of battery power, excessive current draw or internal failure. If he is getting the FMI-7 for excessive current draw, then the clutch itself could be mechanically jamming and not fully releasing. It is unfortunate and rare, but this can happen at any time and is a failed clutch. The other FMI's, 2 and 12 are wiring related, which is also more common. But it depends what it is logging.
     
    2013Maxx, magoo68 and AModelCat Thank this.
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