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[722.9] Valve Autopsy car is not moving

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by desmofab, Nov 10, 2019 at 9:54 PM.

  1. desmofab

    desmofab Senior Member

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    France
    Your Mercedes:
    CLK W209 / 2006 / 320 CDI (OM642) + 722.9
    Hello All,

    As some are already aware here, my car has gone down since July.
    The TCU has burnt at 500km of my home during holidays !

    I bought a new valve body/TCM (VGS2) in order to replace the old one (VGS1)

    As you can see, valve body are pretty similar and I saw only one difference :

    IMG_20191031_231546_0123.JPG
    No difference on upper side.

    I made some cleaning and changed one valve :

    IMG_20191101_091732.jpg IMG_20191101_223126.jpg IMG_20191101_222457.jpg
    I also changed one solenoid.

    Unfortanetly, when I refited the whole my benz refused to move.

    I used DAS and no error code.

    So i remove one time again the valve body and check again but I found nothing.

    I will retry tomorrow with other solenoids...

    Do you have any idea ?
     
  2. DREAMER NO2

    DREAMER NO2 Senior Member

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    Your Mercedes:
    W124 2.6E M103 1989
    May be hard to find your part,, but to just swap out a part that looks like the one removed just not on . Go by the part number on you old unit . Or find an equivalent part only ..can you get an error code from gearbox? i dont no if you can ..
     
  3. OP
    desmofab

    desmofab Senior Member

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    Your Mercedes:
    CLK W209 / 2006 / 320 CDI (OM642) + 722.9
    Hello

    No error code from mbstar.

    I think the is issue is provided by a defective solenoid (k3) .

    I will fit the valve body today. I will keep you in touch
     
    Wighty likes this.
  4. Wighty

    Wighty Senior Member

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    Your Mercedes:
    W211/E320cdi/2009 and CLK200k 2009
    That is some serious mechaniking going on buddy !
     
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  5. SL55 Mark

    SL55 Mark Senior Member

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    Your Mercedes:
    2004 SL55 AMG
    What on earth is that thing ? What does it do ? What car ?
     
  6. star

    star Forum Supporter Authorised Forum Supporter

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    Your Mercedes:
    Smart + others :)
    It’s quite easy to misplace or leave out a tiny ball bearing or plastic valve flap, either will cause havoc.
     
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  7. LostKiwi

    LostKiwi Senior Member

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    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    That's the valve body in the automatic transmission. Lovely isn't it ;)
     
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  8. OP
    desmofab

    desmofab Senior Member

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    Your Mercedes:
    CLK W209 / 2006 / 320 CDI (OM642) + 722.9
    Same result :/

    I checked metal & plastic balls, solenoids valve had also tested and she doesn't want move...

    I put 6L of ATF, it should be enough to move the car...
     
    Last edited: Nov 11, 2019 at 2:52 PM
  9. LostKiwi

    LostKiwi Senior Member

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    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    You need to start looking at which valves operate and at pressures inside the box.
     
  10. OP
    desmofab

    desmofab Senior Member

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    CLK W209 / 2006 / 320 CDI (OM642) + 722.9
  11. LostKiwi

    LostKiwi Senior Member

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    Should be possible in star I would have thought.
     
  12. OP
    desmofab

    desmofab Senior Member

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    Your Mercedes:
    CLK W209 / 2006 / 320 CDI (OM642) + 722.9
    I already searched without success...
     
  13. LostKiwi

    LostKiwi Senior Member

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    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    Until you know you have oil pressure and that the correct clutches are operating you're pretty much scuppered.
    I'm sure that information is available in the live data.
     
  14. OP
    desmofab

    desmofab Senior Member

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    Your Mercedes:
    CLK W209 / 2006 / 320 CDI (OM642) + 722.9
    Hello All !

    I have an update ! I made some test from mbstar and I made a range sensor adaptation.
    When I did it i feel the transmission engaged but after the adaptation nothing changed...

    I checked real time values and got :

    prevu2.PNG
    The programed gear was not the effective engaged gear for the TCM, so, I unplug the TCM from the harness and now the car is moving well ( but it should be in a limp mode)

    So the issue is not coming from the valve body and i did not make a mistake ! But I have to solve a new problem, no error code from MBstar but I have in spare a Y3/8S1 sensor I hesistate to change it "in case of"

    What do you think of that ?
     
    Last edited: Nov 12, 2019 at 8:47 PM
  15. Oldspanners

    Oldspanners Senior Member

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    Your Mercedes:
    C CLASS 2004 C180
    I've no experience of the 722.9 but if I understand correctly the gear lever is in D whilst the box is actually in P and disconnecting the TCU allows the car to move.
    I would suspect the unit at the gear lever.
     
  16. OP
    desmofab

    desmofab Senior Member

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    Your Mercedes:
    CLK W209 / 2006 / 320 CDI (OM642) + 722.9
    Yes is exactly that ! I will try to change the language of MBStar tomorrow.
    No error from ESM (gear lever) I have already change it
     
  17. bembo449

    bembo449 Senior Member

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    w221 320cdi , r170 23k , range rover vogue , insignia vxr , shitron dispatch
    I hope you suss this one out pal
     
  18. Oldspanners

    Oldspanners Senior Member

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    C CLASS 2004 C180
    Looked at a few youtube videos and I'm not sure if the ESM needs to be coded on your year of car.
     
  19. OP
    desmofab

    desmofab Senior Member

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    Your Mercedes:
    CLK W209 / 2006 / 320 CDI (OM642) + 722.9
    Sorry I don't catch you.

    On w209 esm no needs to be coded.
    I will remove one more time the valve body ! I can do it bindfolded !
     
  20. Flyinspanner

    Flyinspanner Senior Member

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    CL500 -W215, A140-W168
    To ‘suss’ it out = to work it out/ fix it
     
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