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Thread: A6 2.0tdi turbo problem

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  1. A6 2.0tdi turbo problem 
    #1
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    UPDATED BELOW!!!
    Hi Guys,
    recently been having intermittent problems with my '07 2.0 tdi. It's been suddenly losing power and the engine management light has come on. Resets fine after ignition recycle and then seems to be fine for the rest of the journey.

    Took it to Audi dealer who read the fault codes and found code P0234 (turbo overboost condition). They have then diagnosed the turbo actuator sticking and told me i need a new turbo for the lovely price of £1600!

    Does anyone know if this can be fixed without a new turbo? or if it definitely does need the turbo replacing, can anyone recommend somewhere that will supply a decent recon/new one for a lot less money!

    p.s Live in the Bristol/Bath area
    Last edited by markashman; 25-01-2012 at 01:49 PM.
     
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  2. #2
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    Some people have used Mr Muscle to remove carbon build up on the turbo vanes

    Sent from my GT-I9100 using Tapatalk
    A4 2.5 tdi QS (mapped)


     
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  3. Exclamation Re: A6 2.0tdi turbo problem 
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    Update on the turbo problem.
    Driving through Bristol on Sunday, pulled away from the traffic lights and there was a loud popping noise and loads of white smoke from the exhaust - no power whatsoever. pulled in straight away and stopped the engine, tried to restart with loads of smoke again!! RAC towed it home. the turbo has basically let go big time, so got a local mechanic to fix a brand new turbo for £700. As he was road testing he says it started up fine, but when driving started making a banging noise coming from the engine block :-( He now thinks that the turbo may have blown bits of metal up into the engine, even though there were no signs of metal or damage leading into the engine when he took the turbo off. Basically i need help, where do i go from here, has anyone had to deal with this problem before? Do i need a new engine!>???
     
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  4. Re: A6 2.0tdi turbo problem 
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    Where do you go from here?

    You had the car scanned at it indicated a boost problem. Audi said you needed a new turbo. You balked at the cost and a few days later your turbo let go???? You then took it to a mechanic who charged you a lot less money but did not do the job right or used a second hand part (how else does it cost £700)

    You need to stop doing quick fixes and get a more reputable garage to do your work. The workshop manual clearly states the steps needed to change the turbo and there is a section that tells you where and how to check for foreign objects in the charge system and the damage that can be caused if these are not removed through thorough inspection.

    You now need to get your car scanned again and get any fault codes read.

    In terms of fixing this, how do you know you don't need yet another turbo??? If so, you better get a refund form your old garage and get it fixed properly.

    Could you have foreign matter in your engine?

    Flush the oil to find out and get a reputable garage to check/clean as appropriate. You might just get away with not needing a new engine.

    but don;t drive the damn thing (if its even driveable)

    other things
    Does the engine hold compression (blown gasket, bent rod etc)
    Does it have oil pressure (sure that noise was not the oil pump letting go?
    Have all the pipes in the induction system have been checked?
    Has the inter cooler been cleaned out.
    Any debris in the coolant.

    and the list goes on.
     
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  5. Re: A6 2.0tdi turbo problem 
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    Hi josh
    yep i took it to Audi and they said it will need a new turbo , however they didnt tell me anything about not driving it or the fact that it could cause damage to the engine if the turbo fails. i actually asked the question "is it ok to drive until i can afford to replace the turbo" they said yes. The garage who did the work, i have been using for many years and have had no previous problems, unfortunately im not in the position to spend £1600, if i was then i would have got Audi to do it! I wasnt looking for a "quick fix" i was looking for the most economic option, but thanks for rubbing it in, that makes me feel loads better.
    I was actually looking for a bit of support seeing as though ive just been made unemployed, was selling the car anyway before this happened because i can no longer afford it, and now have no car, a hefty bill and even less money; but im obviously in the wrong place for that.
    Thanks though for the advice- i will try another garage
     
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  6. Re: A6 2.0tdi turbo problem 
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    I was not deliberately trying to rub your nose in it.

    All the support you need was in my earlier post. What you need to have inspected, what the garage should be looking for. Oh and by the way, I don;t think you need a new engine...yet

    As for driving the car, I would have probably driven it if I read that their was an over boost fault code. But I certainly would not have driven it if Audi told me the turbo was shot and the car was chucking out white smoke.
     
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  7. Re: A6 2.0tdi turbo problem 
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    Quote Originally Posted by joshA6 View Post

    As for driving the car, I would have probably driven it if I read that their was an over boost fault code. But I certainly would not have driven it if Audi told me the turbo was shot and the car was chucking out white smoke.
    My sentiments exactly - the car was running fine, just needed resetting when the car lost power due to the sticking attenuator. No smoke, no noise completely normal before the big bang! Defiantly no warning from Audi not to drive it.
     
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  8. Re: A6 2.0tdi turbo problem 
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    Sorry to read your bad luck pal,I dont think anyone can predict when a turbo will let go,I think the only way to be sure whats go wrong is to strip the whole engine down otherwise you'll be chucking good money after bad,it could have ingested metal through the inlet manifold or through the oil galleries causing expensive damage,the oil pressure could have been low,screwing up the turbo bearing first,the list goes on,sorry cant be more positive but I'm afraid thats the reality.
    A4 B6,A4B7Quattro,MK4 Golf,MK5Golf gone and well forgotten,MK6Golf.
     
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  9. Re: A6 2.0tdi turbo problem 
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    Quote Originally Posted by markashman View Post
    Thanks though for the advice- i will try another garage
    Hi there,

    If you are looking for a good Audi Indy in Bristol I can recommend Streetwise Automotive in Whitehall.

    http://www.streetwise-automotive.co.uk/

    Mitch and his guys have saved me a fortune (£2k+) over the last year compared to quotes I had from Bristol Audi..

    Hope this helps,

    Andy
    Current: 2009 Q7 S-line 240 PS 3.0l TDi



    Gone but not forgotten: 2006 '06 Audi S6 5.2 V10 Quattro
     
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  10. Re: A6 2.0tdi turbo problem 
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    Sorry to hear about your bad luck man, looks like you really are in it. As ukandyb mentioned I would say an independent garage would be your best option, would be better if they were audi specialists but even though you mentioned that you have been using your preferred garage in this case they may have failed you. You definitely need to get it thoroughly looked at before it goes on the road again as you do not want to take your car on the road until you are fully sure of it. Good Luck with it mate

    Raj
     
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