Dis v57 how to set limits on vvt motor. (n42 engine dme 9 )

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Thread: Dis v57 how to set limits on vvt motor. (n42 engine dme 9 )

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  1. Dis v57 how to set limits on vvt motor. (n42 engine dme 9 ) 
    #1
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    Good morning,
    Not sure if I have upset anyone. It seems no one wants to reply to me?
    Any ways I am going to replace my vvt motor sitting on the cylinder head on my n42.
    I have disv57. Inpa and progmanSSS.
    Can any one please please point me in the right direction on how I set the limits on the Vvt motor after install using the above software.
    Please I beg of you guys out there!
    Thanks
     
     

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    on dis you have "learning valvetronic positions", you can also use "delete all adaptations" function after fit new vvt motor

    "Learning function / adaptation
    In order to achieve the correct valve opening height, all the tolerances in the valve gear must be balanced by an adaptation. In this learning procedure, there is a slow approach to the mechanical adjustment limits of the eccentric shaft. The positions thus reached are stored and used in each operating point as the basis for calculating the current valve stroke.

    The learning procedure runs automatically if, for example after a repair, a difference between the last stop position and the new starting position (with terminal 15 on) is detected. The adaptation can also be requested via the DIS-plus Tester."
     
     

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    Thank you, thank you, so I don't have to even use dis ? And if I do I just clear all adaptations in the DME 9.0 ?
    Thank again just don't want to screw anything up and really pinning my hopes arhat it's this unit creating a buzzing grating sound at 2000ish revs.
    Thanks
     
     

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    You'd just be able to swap the parts, then either wait til a fault code come up and follow the diagnostics through and it'll do all that for you, or look in service functions and there should be an adaptation set up listed in there.
     
     

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    Thanks guys, really apprcieate yr time.
     
     

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    i dont think it works with a copy of DIS V57 as it looks for the measuring system which you havent got.
     
     

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    Oh no, so am I screwed, can I get away with this procedure:
    Count the turns taking off the motor
    Install the new motor counting number of turns
    Then learn end stops by switch ignition 2 then off repeat a few times then start the engine ?
     
     

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    Guys I read this, can I do it on the n42 ?

    "This can be done without putting the system into work mode. The best way is to use the tester but when this is not available if you back off the valvetronic motor by hand using the allen screw in the top center so as to not "slap" the eccentric shaft which is under spring tension it can be done. The reason to put it in this mode which runs the motor to the untensioned position and then has you unplug the motor. The risk of damage can occur due to the tension springs causing damage when released.
    After the installation, we usually run an end stop test plan. But often this can also be omitted by installing the motor, plug it in and cycle the key on (not start) so all the lights come on, wait a few minutes, shut it off and repeat a few times to ensure the end stops are learned. The valvetronic does a self test which can relearn the end stops."
     
     

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    Just a quick update, replaced vvt and vcg and spark plug tube orings while I was there. I used the tis procedure, when I turned to ignition 2 I heard the vvt adjust, but I did not start it I turned it off back on then Used my mates auto logic to do the relearn again. This made the motor do exactly the same thing.
    I think as long as the eccentric cam shaft sensor is in good nick the the Ecu will readapt itself.
    Also the whole reason I ventured this far was due to an annoying buzzin at 2k revs. At first thought from dash but upon further look, the sound was eminating from the vvt, the sound is still present but charatieistic has changed, does it at 2.5 revs on standstill or under load in a higher gear low speed at 1100-2000 revs.
    Where as before it would do it all the time when at temp and only at 2k revs regardless of gear, load, speed, moving or stop. ??.
     
     

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    Hi Mems321,
    Have you traced the issue? I have a similar issue: buzzing/vibrations at 2 - 2.5k precisely, with or without load, and also very rough idle.
    I am thinking of running with Valvetronic motor unplugged (i.e. valvetronic disabled and valves runnign at full opening) to check whether valvetronic is the issue. Have you tried this?
    Thanks!
     
     

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