1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

why do I have wastegate flutter/chatter on standard car?

Discussion in 'A3/S3 Forum (8L Chassis)' started by V.I.P_UAE, Jan 25, 2009.

  1. V.I.P_UAE
    Offline

    V.I.P_UAE Member

    Joined:
    Jan 2, 2009
    Messages:
    117
    Likes Received:
    0
    [Jan 25, 2009]
    As above, i have slight wastegate chatter, the car is not modified in any way at all, its getting louder by the day, yeah sounds wicked but im sure it should not do that, unless someone has broken into my garage and fitted something while I was asleep lol..

    Anyone know what could cause this? It dosent seem to be down on power?
    #1
  2. Ads

    Ads

    [Nov 27, 2014]

  3. Tastyterrier
    Offline

    Tastyterrier Monkey Trainer

    Joined:
    Jul 12, 2003
    Messages:
    343
    Likes Received:
    0
    [Jan 25, 2009]
    Probably a knacked DV. The standard Bosch ones don't last a long time.
    #2
  4. Prawn
    Offline

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    9,815
    Likes Received:
    1,513
    [Jan 25, 2009]
    yup, it's a split diaphram in the DV, replace it with a forge if you don't want it to happen again!

    Also, as per the thread on here the other day, it's not anything to do with the wastegate at all, that's a commonly made mistake.

    It's actually compressor stall, as the pressurised air inside the system hasn't been vented through the DV, because it's not openning.
    #3
  5. nickrex
    Offline

    nickrex Member

    Joined:
    Oct 15, 2008
    Messages:
    46
    Likes Received:
    0
    [Jan 25, 2009]
    Yeah. Definately a knackered dump valve. Mine did the same a couple of months ago. They're not expensive and a 10 minute job to fit.
    #4
  6. Dave_Bayern
    Offline

    Dave_Bayern Slipping at 3.5Krpm

    Joined:
    Sep 26, 2006
    Messages:
    1,913
    Likes Received:
    4
    [Jan 25, 2009]
    Diverter Valve, Not dump valve.

    The two are very different in operation.

    But yeah, as above. Yours is broken.
    #5
  7. V.I.P_UAE
    Offline

    V.I.P_UAE Member

    Joined:
    Jan 2, 2009
    Messages:
    117
    Likes Received:
    0
    [Jan 25, 2009]
    will it lose power through this, ive only had it 3 weeks, maybe it will be quicker after I change??
    #6
  8. V.I.P_UAE
    Offline

    V.I.P_UAE Member

    Joined:
    Jan 2, 2009
    Messages:
    117
    Likes Received:
    0
    [Jan 25, 2009]
    is a diverter valve different to a dumpvalve? where is this located? thnx
    #7
  9. themanthatcan
    Offline

    themanthatcan Member VCDS Map User

    Joined:
    Mar 18, 2008
    Messages:
    661
    Likes Received:
    0
    [Jan 25, 2009]
    Yeah it'll cause the car to feel slower and (the way I understand it) also bring about premature failure of your turbo if not sorted out quickly. When you come off boost (ie when changing gear) the pressurised air is travelling back towards the turbo, causing the blades to slow down. When you come back on the power the turbo has to spool up all over again. This will affect performance.

    Andy
    #8
  10. 1animal1
    Offline

    1animal1 The Clar!! it mouves!!! VCDS Map User

    Joined:
    Dec 27, 2007
    Messages:
    9,978
    Likes Received:
    31
    [Jan 25, 2009]
    just buy a new one from Audi, cost nearly £20..... if your not bothered about the shiney Forge type then this will suit just fine.... unless you want to spend £80-£90
    #9
  11. V.I.P_UAE
    Offline

    V.I.P_UAE Member

    Joined:
    Jan 2, 2009
    Messages:
    117
    Likes Received:
    0
    [Jan 25, 2009]
    Dumpvalve or Diverter valve??? what do i need?

    thanks
    Oliver
    #10
  12. Andy_S3
    Offline

    Andy_S3 Member VCDS Map User

    Joined:
    May 17, 2007
    Messages:
    722
    Likes Received:
    0
    [Jan 25, 2009]
    Diverter valve matey
    #11
  13. Dave_Bayern
    Offline

    Dave_Bayern Slipping at 3.5Krpm

    Joined:
    Sep 26, 2006
    Messages:
    1,913
    Likes Received:
    4
    [Jan 25, 2009]
    Simple.

    Dump valve - dumps air into the atmosphere
    Diverter Valve - diverts air back into the intake system

    No VAG Car has a dump valve
    #12
  14. V.I.P_UAE
    Offline

    V.I.P_UAE Member

    Joined:
    Jan 2, 2009
    Messages:
    117
    Likes Received:
    0
    [Jan 26, 2009]
    Excellent, does anyone know the part number?
    Cheers
    oliver
    #13
  15. SDO
    Offline

    SDO Member

    Joined:
    Jan 18, 2008
    Messages:
    153
    Likes Received:
    0
    [Jan 26, 2009]
    I have this but mines sounds more like i've got a atmospheric DV on, i haven't got a forge diverter valve would having a panel filter do anything
    #14
  16. Andy_S3
    Offline

    Andy_S3 Member VCDS Map User

    Joined:
    May 17, 2007
    Messages:
    722
    Likes Received:
    0
    [Jan 26, 2009]
    A panel filter will increase the noise from the diverter valve slightly.
    #15
  17. Prawn
    Offline

    Prawn My other car is a MINI!!!!

    Joined:
    Dec 8, 2006
    Messages:
    9,815
    Likes Received:
    1,513
    [Jan 26, 2009]
    the standard DV should sound a little like an atmospheric DV, the sound you hear is just comming from the air filter, and it's nothing to worry about.
    #16

Share This Page