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Intermittent power loss

Rob1967 Sep 9, 2018

  1. Rob1967

    Rob1967 Member Team V6 Audi A6 Audi Avant Owner Group TDi Manual

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    I have put New turbo and air flow metre on car and still intermittent loss of power.i had car scanned and it says airflow metre and turbo control limit not reached what could be the cause of this
    Thanks
     
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  3. Darren92

    Darren92 Well-Known Member

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    underboost issue, might help if you state which engine you have along with a proper diagnostic log
    is the new turbo correctly set up? ie actuator correctly set?
    has your n75 been checked? has the car been on a smoke test to identify any possible air leaks??
     
  4. Rob1967

    Rob1967 Member Team V6 Audi A6 Audi Avant Owner Group TDi Manual

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    It is a new turbo complete with electronic actuator it is 2.7tdi don't have scan log have not checked n75 or had smoke test
     
  5. smog c6

    smog c6 New Member

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    I have the same issue, read my thread I fitted a refurbed turbo onto mine and I think the actuator needs coding. This must be done via VAS tools or ODIS. I’ve uploaded a video of my actuator movement which shows the rod hitting the stop screw.

     
  6. smog c6

    smog c6 New Member

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    This is how my turbo blew up, I think excess heat caused a vane to snap and be ingested by the exducer turbine
     

    Attached Files:

  7. Rob1967

    Rob1967 Member Team V6 Audi A6 Audi Avant Owner Group TDi Manual

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    Do you need to have actuator coded to car . I rang two different audi specialist garages and one said yes and other one said no it is plug and play .who do you believe.it is 2.7 diesel with electronic actuator
     
  8. B5NUT

    B5NUT Well-Known Member TFSI Owners Group VCDS Map User Audi A6 Audi A3 Audi Avant Owner Group quattro S tronic S-line owners group

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    On the 3.0 TDI the actuator need calibrating, I would have thought the 2.7 would be the same however, the turbo setup is different so could be wrong.
     

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