Audizine - An Automotive Enthusiast Community

Results 1 to 24 of 24
  1. #1
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    2.0tfsi turbo whiseling from 1100 to 2000rpm

    Guest-only advertisement. Register or Log In now!
    Hi,
    I Have changed my turbo for new one from Borgwarner. After instalation I noticed that turbo is whiseling or something around it.
    It can be heard only when driving, when you pump the gas standing still it cant be heard.

    When driving up from 2000rpm,there is no wierd sound and it pulls up normaly.

    What could that be?
    Thx

  2. #2
    Veteran Member Three Rings
    Join Date
    Nov 23 2009
    AZ Member #
    51117
    Location
    NYC, US

    Quote Originally Posted by Primzy69 View Post
    Hi,
    I Have changed my turbo for new one from Borgwarner. After instalation I noticed that turbo is whiseling or something around it.
    It can be heard only when driving, when you pump the gas standing still it cant be heard.

    When driving up from 2000rpm,there is no wierd sound and it pulls up normaly.

    What could that be?
    Thx
    You said your new turbo is from BorgWarner? Is it a K04? Do you have a sound clip?

  3. #3
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    No, it is k03, like original...
    It is a bit louder than on video. It can be heard also when you push on the gas fast, it feels like that sound comes when trubo is starting to spin.

    https://youtu.be/V3L9BmJrxE8
    Best heard at 23s

  4. #4
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    Is it possible that this problem is connected with second air pump, because when the car is cold, you can hear growling/grinding sound for less then a minute? It comes from air filter location?
    thank you for your answer!

  5. #5
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    https://youtu.be/BXGqVUwlZXA
    Here is a video od whining. It is a cold start, but it happens when Hot as well.
    Any ideja?
    Pleas help!
    Turbo and pcv valve are New.

  6. #6
    Veteran Member Four Rings Crucible35's Avatar
    Join Date
    Apr 22 2010
    AZ Member #
    58005
    My Garage
    13 Lawnmower Prem. Quattro
    Location
    Toronto, Ontario. Canada

    May not be able to hear it properly but that sounds like it's just spooling up as it should.
    '15 A4 S Line Q Tip Monsoon
    '09 A4 Premium Q Tip Meteor (Gone)

  7. #7
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    Turbo doesn't spin untill 2000 its not variable turbine...
    As well I have listened to my friends car, same engine, no strange sound...

  8. #8
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    Pleas, can somebody help me what else can i check.
    Here is a new video:
    https://www.youtube.com/watch?v=a6CanxPx9T4

    Video was taken early in the morning, engine was cold.

    Also there is a rumbling noise from air box, like metal sound, especialy when cold.

  9. #9
    Senior Member Four Rings Theiceman's Avatar
    Join Date
    Feb 15 2016
    AZ Member #
    368804
    Location
    Cambridge Ontario

    Sorry I cant help as I still have to replace mine.. could turbo be just bad or noisy ?

    did you use a DIY to replace it of just start unbolting stuff till it fell out ?
    2014 A4 2.0TQ Technik
    2006 A4 2.0TQ 6spd
    1978 Porsche 911SC Targa
    1976 Yamaha XS 360

  10. #10
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    I used a DIY method with a mechanic.
    Seller says that turbo cant be bad, because if it is, there should be whiseling in higher rpms as well.

  11. #11
    Senior Member Four Rings Theiceman's Avatar
    Join Date
    Feb 15 2016
    AZ Member #
    368804
    Location
    Cambridge Ontario

    Quote Originally Posted by Primzy69 View Post
    I used a DIY method with a mechanic.
    Seller says that turbo cant be bad, because if it is, there should be whiseling in higher rpms as well.
    if you have Links to a DIY I would appreciate it , thanks

    strange that it would only happen with install of new turbo. I guess I would look closely at other stuff that was removed.
    2014 A4 2.0TQ Technik
    2006 A4 2.0TQ 6spd
    1978 Porsche 911SC Targa
    1976 Yamaha XS 360

  12. #12
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    Actualy I used online etka, to se where the bols are, those exploded views are quite good...
    I am wondering if it is possible that sound is comming from exhaust or catalysator.

  13. #13
    Senior Member Four Rings Theiceman's Avatar
    Join Date
    Feb 15 2016
    AZ Member #
    368804
    Location
    Cambridge Ontario

    Quote Originally Posted by Primzy69 View Post
    Actualy I used online etka, to se where the bols are, those exploded views are quite good...
    I am wondering if it is possible that sound is comming from exhaust or catalysator.
    I'm not sure how unless something was left loose and as it heats and expands it does not make noise..
    2014 A4 2.0TQ Technik
    2006 A4 2.0TQ 6spd
    1978 Porsche 911SC Targa
    1976 Yamaha XS 360

  14. #14
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    I noticed that exhaust is pretty black inside. Maf shows only 2.2-2.4 g/s at idle (780rpm).
    Boost max 23psi

  15. #15
    Established Member Three Rings
    Join Date
    Dec 03 2016
    AZ Member #
    387409
    Location
    nowhere

    An aftermarket k03 or an actual borgwarner k03, there's a difference.

    Reminds me of an out of balanced turbo.

    Also, who did the install?
    HEAR

  16. #16
    Established Member Four Rings Novarider's Avatar
    Join Date
    Jul 02 2017
    AZ Member #
    402048
    Location
    Knoxville TN

    Is it tuned? 23 psi boost isn't stock.
    2011 A4 Avant Prestige S-Line

  17. #17
    Senior Member Four Rings Spawne32's Avatar
    Join Date
    Nov 20 2016
    AZ Member #
    386232
    Location
    NJ

    That is a bit unusual sounding, but I have gotten all sorts of sounds from the stock turbo. My airbox rumbles, there are low pitched whistles when driving through tunnels or past buildings or other cars and its been fine for 50k miles now. How are you reading your max boost pressure? Through a datalog or through a boost gauge?

  18. #18
    Active Member Three Rings
    Join Date
    Jun 17 2018
    AZ Member #
    420830
    Location
    Colorado

    Random idea: could this be the PCV with a little tear making the noise only under vacuum? Once the vacuum goes away (i.e. the turbo is on), the whining stops.

  19. #19
    Senior Member Four Rings Spawne32's Avatar
    Join Date
    Nov 20 2016
    AZ Member #
    386232
    Location
    NJ

    Quote Originally Posted by blgilles View Post
    Random idea: could this be the PCV with a little tear making the noise only under vacuum? Once the vacuum goes away (i.e. the turbo is on), the whining stops.
    Entirely possible.

  20. #20
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    Quote Originally Posted by Novarider View Post
    Is it tuned? 23 psi boost isn't stock.
    I think this is normal boost. That is absolute pressure (boost + atmospheric pressure)

  21. #21
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    Quote Originally Posted by Spawne32 View Post
    That is a bit unusual sounding, but I have gotten all sorts of sounds from the stock turbo. My airbox rumbles, there are low pitched whistles when driving through tunnels or past buildings or other cars and its been fine for 50k miles now. How are you reading your max boost pressure? Through a datalog or through a boost gauge?
    Same here. My airbox rumbles as well. Every time I start moving, there is this low whiseling sound and rumbling noise from airbox.
    If you disconnect hose from airbox and if you put your ear next to it, you can hear the engine running (this pap pap pap pap pap pap pap sound).
    I meassure boost with a boost gauge on Torque and Vag-com.

    - - - Updated - - -

    Quote Originally Posted by flowhigh View Post
    An aftermarket k03 or an actual borgwarner k03, there's a difference.

    Reminds me of an out of balanced turbo.

    Also, who did the install?
    It is a Borgwarners k03. What is the difference?
    Turbo was installed by my mechanic, and than again by seller of the turbo...
    Out-balanced turbo? Is it possible that it balances it self when spinning fast?

  22. #22
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    Quote Originally Posted by Spawne32 View Post
    Entirely possible.
    PCV is new. It is not original, but I think that should not be a problem...

  23. #23
    Active Member One Ring
    Join Date
    Jul 09 2018
    AZ Member #
    422081
    Location
    Slovenia

    There is a new symptome, i hope it is connected with original problem.
    There is a very quiet noise (like hissing or an AC vent.), but it does not change with rpms. It stops as soon as i touch the brake. It can be heard only in the cabin and while driving or standing still.
    Is it possible that because of a vacuum leak in the brake booster i am having other problems as well?

  24. #24
    Established Member Three Rings
    Join Date
    Dec 03 2016
    AZ Member #
    387409
    Location
    nowhere

    Quote Originally Posted by Primzy69 View Post
    It is a Borgwarners k03. What is the difference?
    There are Chinese made aftermarket K03 turbos.

    Quote Originally Posted by Primzy69 View Post
    Out-balanced turbo? Is it possible that it balances it self when spinning fast?
    No. However if infact it is a new Borgwarner turbo I doubt it would be out of balance, but anything is possible.
    HEAR



Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


    © 2001-2018 Audizine, Audizine.com, and Driverzines.com
    Audizine is an independently owned and operated automotive enthusiast community and news website.
    Audi and the Audi logo(s) are copyright/trademark Audi AG. Audizine is not endorsed by or affiliated with Audi AG.