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Turbo and actuator

Bronco8459
in Audi A8 (D3) Forum

Featured Replies

 hI I have been told the actuator is faulty can I just change it? heard all sorts of tales 

A8 3.0tdi 233ps 171kw 2006

Cheers 

  • Author

Hi Trevor

initially engine warning light comes on the heate plug light then goes into limp mode switch off and it can be fine all day 

cheers 

chris 

It could be the variable vanes in the turbo gummed up...you can get a special cleaner to run through it which should sort the problem.

Below is a photo of the vane assembly which gums up and throws up the warning lamp and goes into limp home. Worse case scenario you can replace the ring assembly.

http://www.ebay.co.uk/itm/Diesel-Turbo-Cleaner-Kit-POWERFUL-TURBO-CLEANING-KIT-Dissolves-Carbon-Limp-Mode-/281771781310?hash=item419ae82cbe:g:71UAAOSwHnFVzFxJ

 

VVT.jpg

  • Author

Hi Trevor

I  did have it terracleaned does that not do the same thing?

Cheers Chris 

  • Author

Hi Trevor

I will buy a kit today and see how we get on...Will report back.

REgards 

Chris 

 

    • Like 1
    • Author

    Hi

    I bought the turbo cleaning kit....is it a big job to do? On reading the info on line looks a bit tricky 

    cheers Chris 

    • Author

    Well I used the turbo cleaner bit more evolved than you would think. When you make up the template to cover the turbo out let the nuts do not pinch up enough to hold it in place so I taped it as best I could I did ensure the vanes etc got a good dunking turning the rotor and manually operating the variable parts all seems ok so far and have given the car  a good run to be honest I don't think it has resolved my issues. Chris 

    • Like 1
    • Author

    Hi Trevor that's my thinking too as with most things on the A8 it can take 400/500 miles before all settles down I will comment further...

     

    • Like 1

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