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TDI turbo actuator

Discussion in 'A3/S3 Forum (8L Chassis)' started by a3tdi2001, Apr 8, 2010.

  1. a3tdi2001
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    a3tdi2001 Member

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    [Apr 8, 2010]
    Hi. My car's being going into limp mode and I think that it's the turbo actuator. Just wondering if anyone can tell me if it's safe to work the actuator rod back and forth to free it off without removing anything, or will this damage the actuator?
    Also what would be a good lubricant? I was thinking of copper grease because of the temperature.
    Cheers
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Apr 8, 2010]
    What makes you think its the actuator thats causing your problem?

    You can manually move the actuator safely but if you can do it 'easily' by hand then that could indicate the actuator has seen better days...

    Have you had any fault codes logged?

    A sticking/inoperative actuator if hold the wastegate shut would be producing uncontrolled boost which in turn would trigger limp mode... I would get the fault codes read if you haven't already and post the results...

    <tuffty/>
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  4. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Apr 8, 2010]
    The actator on a Deisel turbo is for actiavating the VNT mechanism. It is very possible that the vanes are sticking and thus causing limp mode. Search innotec, they do a proper decoke kit for VNT turbos.
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  5. a3tdi2001
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    a3tdi2001 Member

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    [Apr 8, 2010]
    Cheers
    I've had it scanned and I get code 17965 - Charge pressure control +ve deviation. Turbo is under 40k miles old from Audi main agent :(
    Last edited: Apr 8, 2010
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  6. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Apr 8, 2010]
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