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Thread: Turbo Issues Fault Code P334B

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  1. Re: Turbo Issues Fault Code P334B 
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    No, it's tight. I had to do a Q7 wiper motor this afternoon, I had to climb into the engine bay and I'm 6 foot, 58 and getting fat! I need a rest now.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

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  2. Re: Turbo Issues Fault Code P334B 
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    Quote Originally Posted by Crasher View Post
    No, it's tight. I had to do a Q7 wiper motor this afternoon, I had to climb into the engine bay and I'm 6 foot, 58 and getting fat! I need a rest now.
    Nothing exciting to report but I've had a good look. My observations are
    1. This looks like an impossible job for mere mortals. Because you can't see from behind the actuator, you need a mirror to see what you're doing or just feel your way around (which, with the potential for losing circlips seems like a bad idea). Do real mechanics remove hoses and stuff to be able to get down there? Do they have Inspector Gadget arms?
    2. I don't know how representative the diagram is, but the lever on the actuator side seems to be pretty vertical in the normal (I assume closed) position. Mine is tilted slightly towards the wastegate, which would mean the wastegate's slightly open and never fully closing - I think. Just a theory, but again it would be consistent with my underboost. Or maybe the diagram's not that representative.
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  3. Re: Turbo Issues Fault Code P334B 
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    That picture is if you were a miniature camera on the bulkhead or with the engine removed. We have to work with mirrors and fingers blind by feel... yes it is stressful painful and arm bleeding. These by the way are easy, try working on a Q7 where the left front air spring feed line has been eaten through by a rodent under the brake servo and to get at it you have to remove the wipers, plenum chamber cover, engine ECU, wiper arm system and then work your way through inches of composted leaves and rodent **** just to even get at the pipe ends... then I slipped on the lift arm as the car was dripping wet, fell on my ****, scoured my spine and ended up in a heap on the floor... I am too old for this ****!
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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  4. Re: Turbo Issues Fault Code P334B 
    #24
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    Quote Originally Posted by Crasher View Post
    That picture is if you were a miniature camera on the bulkhead or with the engine removed. We have to work with mirrors and fingers blind by feel... yes it is stressful painful and arm bleeding. These by the way are easy, try working on a Q7 where the left front air spring feed line has been eaten through by a rodent under the brake servo and to get at it you have to remove the wipers, plenum chamber cover, engine ECU, wiper arm system and then work your way through inches of composted leaves and rodent **** just to even get at the pipe ends... then I slipped on the lift arm as the car was dripping wet, fell on my ****, scoured my spine and ended up in a heap on the floor... I am too old for this ****!
    Bloody Nora!
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  5. Re: Turbo Issues Fault Code P334B 
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    Quote Originally Posted by Crasher View Post
    That picture is if you were a miniature camera on the bulkhead or with the engine removed. We have to work with mirrors and fingers blind by feel... yes it is stressful painful and arm bleeding. These by the way are easy, try working on a Q7 where the left front air spring feed line has been eaten through by a rodent under the brake servo and to get at it you have to remove the wipers, plenum chamber cover, engine ECU, wiper arm system and then work your way through inches of composted leaves and rodent **** just to even get at the pipe ends... then I slipped on the lift arm as the car was dripping wet, fell on my ****, scoured my spine and ended up in a heap on the floor... I am too old for this ****!
    I get the sense that my local garage (who aren't VAG specialists) aren't very interested in doing this for me - maybe because it's hard. I asked if they'd be willing to try and find out if the wastegate's sticky by freeing the arm and seeing how free the lever is - and maybe trying to free it up if it is. Obviously, I'd pay for their effort - not expecting them to do anything for nothing. Anyway, less than enthusiastic.

    So here's another easy question while I contemplate attempting this myself. Do you think that removing the circlip at the turbo end would be sufficient to free the arm? Or would it need the circlip at the actuator end to be removed as well?
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  6. Re: Turbo Issues Fault Code P334B 
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    Here we are in real life

    Actuator End
    Actuator End.jpg

    Turbo End
    Turbo End.jpg

    Any offers on whether that looks like the wastegate's in the open or closed position, or somewhere in between?
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  7. Re: Turbo Issues Fault Code P334B 
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    Quote Originally Posted by Crasher View Post
    That picture is if you were a miniature camera on the bulkhead or with the engine removed. We have to work with mirrors and fingers blind by feel... yes it is stressful painful and arm bleeding. These by the way are easy, try working on a Q7 where the left front air spring feed line has been eaten through by a rodent under the brake servo and to get at it you have to remove the wipers, plenum chamber cover, engine ECU, wiper arm system and then work your way through inches of composted leaves and rodent **** just to even get at the pipe ends... then I slipped on the lift arm as the car was dripping wet, fell on my ****, scoured my spine and ended up in a heap on the floor... I am too old for this ****!
    Just about got the courage up to have a go at this. Could I just ask you ... the circlip (e-clip) that holds the actuator arm onto the wastegate lever - looks like even with that circlip off, the arm won't slide off. The round flat end that's poking through the end of the arm looks almost as big as the circlip. Am I missing something?
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  8. Re: Turbo Issues Fault Code P334B 
    #28
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    You may have to remove both circlips to be able to slide the rod off, we don’t tend to do this sort of thing much as it is not worth it when we see this problem, we just take the blower off, hand it through the window at Midland Turbo and let them deal with it.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

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  9. Re: Turbo Issues Fault Code P334B 
    #29
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    Quote Originally Posted by Crasher View Post
    You may have to remove both circlips to be able to slide the rod off, we don’t tend to do this sort of thing much as it is not worth it when we see this problem, we just take the blower off, hand it through the window at Midland Turbo and let them deal with it.
    Thanks. I daresay I would do the same if I lived close by. I'm in a bit if a quandary though, because my normal garage seems not very interested and I'm struggling to find a turbo expert in the area. The nearest VAG specialist hasn't got back to me and the Audi dealership ... well, they'd be the very last resort. I have this nagging feeling that if I managed to get the arm off, and regardless of whether I find a sticky wastegate and manage to free it, that I wouldn't be able to get the circlips back on. Any harm in driving the car (a short distance) to the garage, if I end up in that situation? If not, I'd probably try it anyway. What's the worst that could happen!
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  10. Re: Turbo Issues Fault Code P334B 
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    Quote Originally Posted by drlabman View Post
    What's the worst that could happen!
    The wastegate flap slams shut and is held there by gas pressure whilst the turbo spins up out of control over 250.000 rpm and frags, filling the engine with compressor fragments.
    Anthropogenic climate change, the biggest con inflicted on mankind since religion...

    Slava Ukraini
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