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Thread: Auto gearbox self learning?

  1. #1
    Regular Member Maurice's Avatar
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    Question Auto gearbox self learning?

    Since the reparairs from august , the auto gearbox seems to have problems to select the right gear with the throttle position (can't descripe it otherwise). The battery has been disconnected during repairs, could this be the problem (erased memory) ?
    Oil will be changed next month , what oil fits a AF33 box?
    She is a 2003 Signum , 3.0 DTi

    Kind regards, Maurice

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    Regular Member jonnybravo's Avatar
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    Vehicle : Signum


    Engine : 20 Dti


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    Hi Maurice
    have you checked if there are any codes stored,if you have DTC PO700,PO715,PO720 any or all,it will be input/output speed sensor signal with water in sensor.
    VX now apply grease to the sensors when they fit new to stop water getting in.
    If no codes and there is a delay changing up from2nd to 3 rd and revs pick up between change it may be a transmission oil pressure vary between changes,the cure is a software reprogram of the TCM by VX,applied to vehicles in the factory from 2004 on

  3. #3
    Regular Member Maurice's Avatar
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    Haven't checked on codes yet. Try our local Vx dealer this week,maybe they can find something.
    The box does shift through gears, only thing is that you can feel that.
    It could be a oil problem (level,age). Ask that too on my visit.
    Thanks for the information!

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    Regular Member jonnybravo's Avatar
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    Vehicle : Signum


    Engine : 20 Dti


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    check the oil yourself maurice and save youself loads a cash,remove engine top cover oil at running temp,hand brake on,move gear selector from P to D and back to P with engine running.
    you will see dip stick fastened with a bolt ,remove bolt pull out dipstick engine still running remove O ring from dipstick and check oil leave stick in for 2/3 seconds level must be between grooves on HOT mark
    don't forget to refit O ring to stick when you replace it.
    Most garages have code readers they are usually cheaper than main dealers or buy your own of the bay about £20/30
    Last edited by jonnybravo; 28th September 2010 at 19:36. Reason: extra info

  5. #5
    Regular Member Maurice's Avatar
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    I'll check the oil first tomorrow,maybe a good starter indeed.
    Our local garage should have a codereader, shall ask them.
    Thanks!

  6. #6
    Regular Member Maurice's Avatar
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    Checked the gearbox as much as I could see....But were do you check the oillevel ?? Is it the torx bolt that is on it? There is no stick ,as far as I can see...

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