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A3 2.0TDi 140 Siren noise from turbo??

Discussion in 'A3/S3/Sportback (8P Chassis)' started by DCW87, Feb 20, 2012.

  1. southylad

    southylad Active Member

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    Recon the turbo
     
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  3. Blackie

    Blackie Active Member

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    Not this chestnut again

    DO NOT listen to everyone who says its the turbo. As per the link to the last thread its a costly mistake as i found out to listen to all the experts.

    some make the noise and some dont

    i even rang CR turbos and he thought it was quite amusing as he gets loads of income from this. He said usually there is nothing wrong with most of the turbos sent in for refurb
     
  4. Cyrix

    Cyrix Member

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    Agree with this, my car made the siren noise from 50k-119k. I only replaced the turbo when the noise vastly increased overnight as i suspected failure wasn't too far off. Still wasn't actually leaking any oil internally though and the VNT was still moving albeit a little notchy.
     
  5. SAiLO

    SAiLO Well-Known Member
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    Start worrying when the car decides to go into limp mode and you get overboost codes from VCDS scan.
     
  6. Jack_tdi

    Jack_tdi Member

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    I agree mine did it for ages before overboost set in but my turbo stopped making the noise when I had it reconed So it must be the turbo making the noise but I'm interested in what part .....

    Is it the chipped vanes like in my post above?
     
  7. Boon

    Boon Active Member
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    Mine does it between 1000 & 2000rpm. Actually quite like it! And won't be changing the turbo till I start getting overboost codes & even then I'll strip it down first

    Most things that spin at figures approaching 1000 revolutions a second will make a bit of noise
     
  8. DCW87

    DCW87 Member

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    Just thought i'd update this.....

    18 months on and its still making the noise but working perfectly fine :)

    So for anyone who stumbles on this with the same noisy turbo problem..... don't jump to the conclusion that your turbo is on its way out!
     
  9. mike foster

    mike foster Fossie
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    But don't just ignore it because if you do, you may be sorry !!
     
  10. Stol1975

    Stol1975 Member

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    The last two posts some up this topic completely, damned if you do and damned if you don't. Has anyone recorded the noise? Does anyone get a noise when you come of accelerating and just drive at a steady 1400-1750 revs which goes as soon as you accelerate again?
     
  11. Tomwebb

    Tomwebb A3 2.0 tdi s line 170

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    same as me... get a hybrid and remap = 200+ bhp and cheaper than an OEM :)
     
  12. DCW87

    DCW87 Member

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    With mine (still the same turbo noise as when i got it), I start getting the 'siren' sound at around 1500rpm. If I hold the rev's there the sound and pitch of the turbo remain the same, pitch and volume increase as the rev's go up.

    I can record mine and bang it on youtube for you if you want?

    In summary from what I've read, some of the seals on the turbo aren't the best and are prone to causing the siren noise. My mates 2.0tdi has a similar sound but much quieter. If you car goes into limp mode, and the noise is getting worse, then its time to get it checked out. I believe you can get a turbo refurb for around the £500-600 mark including labour?
     
  13. smurfworth

    smurfworth Well-Known Member
    Audi S3

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    Update from mine:

    Started making a siren noise that you could hear from a few streets away, which made people turn around in the street thinking it was a police car.

    Recon turbo was put on under warranty, has had a quiet siren noise like everyone describes and like my old one before it became really really loud, makes good power, still drives perfect.

    Nothing to worry about, drive on till it gets ridiculously loud!
     
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  14. DCW87

    DCW87 Member

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    I'd watch out with stock components mate!

    A mate of mine has just had a Leon 2.0tdi 170 mapped to something around the 210-220 mark apparently without doing any research whatsoever beforehand! The map was done by some random guy..... Judging by the way my mate drives, I think he'll be in the garage with a goosed car before long!
     
  15. Tomwebb

    Tomwebb A3 2.0 tdi s line 170

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    I've done my research, getting a full turbo back miltek, uprated hoses, + a custom map by amd with the torque capped so the clutch won't melt untill I can afford a better one. Ill be happy with 200-210bhp :)
     
  16. DCW87

    DCW87 Member

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    Fair play man :) are you 140 or 170? I only thought the 140 could handle up to 190 safely on stock internals??
     

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