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Thread: A3 2.0TDi 140 Siren noise from turbo??

  1. #41
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    Recon the turbo

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  3. #42
    Blackie's Avatar
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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. #43
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    Quote Originally Posted by Blackie View Post
    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
    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. #44
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    Start worrying when the car decides to go into limp mode and you get overboost codes from VCDS scan.
    VCDS USER

  6. #45
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    A3 2.0TDi 140 Siren noise from turbo??

    Quote Originally Posted by Blackie View Post
    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
    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. #46
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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. #47
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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. #48
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    Quote Originally Posted by DCW87 View Post
    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!
    But don't just ignore it because if you do, you may be sorry !!
    2006 2.0L BKD 140 Sportback RHD ( manual, with extra bits incl. mfsw ) Gone
    2012 2.0L TDI Q3 S Line Quattro

  10. #49
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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. #50
    A3 2.0 tdi s line 170

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    Quote Originally Posted by smurfworth View Post
    I'm getting limp mode quite a lot with over boost codes. What's recommended?
    same as me... get a hybrid and remap = 200+ bhp and cheaper than an OEM

  12. #51
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    Quote Originally Posted by Stol1975 View Post
    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?
    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. #52
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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!
    DCW87 likes this.

  14. #53
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    Quote Originally Posted by Tomwebb View Post
    same as me... get a hybrid and remap = 200+ bhp and cheaper than an OEM
    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. #54
    A3 2.0 tdi s line 170

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    Quote Originally Posted by DCW87 View Post
    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!
    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. #55
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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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