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Bearing noise when setting off in first gear is it my turbo?

Discussion in 'A3/S3 Forum (8L Chassis)' started by Dj Vegas, Nov 15, 2011.

  1. Dj Vegas

    Dj Vegas Member

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    when i first start my car in the morning i set off in first gear and it sounds to me like my turbo bearings is on its way out
    any body had a similar problem with turbos?
     
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  3. Westy

    Westy Well-Known Member

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    Can you replicate the noise in any other gear? does it only do it when the car is cold/warming up?
     
  4. Dj Vegas

    Dj Vegas Member

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    only first thing in the morning then fine does it a little in second gear
     
  5. Dj Vegas

    Dj Vegas Member

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    yes cold / warming up
     
  6. Westy

    Westy Well-Known Member

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    Could well be the turbo then just before the oil warms up around the bearing. Do you know if it's the original turbo and how many miles it's done?
     
  7. Dj Vegas

    Dj Vegas Member

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    i would think so but not really sure im having a bit of bad luck atm haha its done 140'000 thousand miles so quite a few but drives like a dream to say its done that many i have installed the ebay FMIC do think that the N75 valve could be to small?
     
  8. Westy

    Westy Well-Known Member

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    If you have full service history and cant find anything to say the turbo has ever been changed then it's had a good life! Unless you start to get blue smoke out the exhaust or this noise gets really bad I wouldn't worry too much.
     
  9. camscockle20vT

    camscockle20vT The stigs ugly brother

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    I agree with westy, but to add to your dilema i would ask, do you wait atleast 30 seconds before turning your engine off?
     
  10. Dj Vegas

    Dj Vegas Member

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    yes i leave engine running foe 30 secs cheers westy
     
  11. Lee172

    Lee172 GT3071

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    I dont understand why the problem would be the turbo if its in first gear only. Do you let your car idle for a minute in the morning or drive stright away?
     
  12. s3dave

    s3dave TFSI Hybrid
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    Are you sure its not the secondary air pump you can hear?
     
  13. a3tdi2001

    a3tdi2001 Member

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    Have you considered your gearbox? Does it make the noise when stationary? Could be worth a change of gearbox oil?
     
  14. Mike B

    Mike B Well-Known Member

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    Agree if its the turbo it would do it if you revved in neutral if not g/box oil may be low or nedd changing
     
  15. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow...
    Staff Member Moderator Audi S3

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    Define this noise... K0x turbos have a journal bearing so I am not sure if they would make a 'noise' and if the bearing was that worn it would be noticable in performance terms...

    Ball bearing turbo's like Garrett GT's do make a rather nasty noise when they are about to let go having experienced one do exactly that on the dyno once...

    You can check for wear by taking off the TIP and trying for play in the shaft... if you can pull it in and out a lot then thats thrust bearing wear... excessive up and down play will be the journal bearing...

    <tuffty/>
     
  16. scott6452

    scott6452 New Member

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    I currently have the exact problem described. Just a tinny rattle when the engine is picking up from low revs when cold. As soon as the car heats up the noise is gone. Not sure if it is just a coincidence but my s3 has just turned 130000 miles also with original turbo. No other turbo problems however, apart from a mega boost leak that im sure isnt doing it's life much good.

    Im sure i'd love the car a whole lot more if i could find the source of this bloody noise and get rid of it!
     
  17. Inertiauk

    Inertiauk Member

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    Mine got a bit noisy like this just before the turbo seals went, its not as noticeable in higher gears because its overpowered by other noises.
     
  18. aragorn

    aragorn "Stick a V8 in it!"
    Staff Member Moderator VCDS Map User

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    The noise of a K03 failing is usually described as being like a dentist drill.

    I've noticed my turbo makes a sort of wooooooooo noise predominantly when cold when driving at low load, ie pulling away. I guess you could describe it as "ghosty" noise.
     
  19. Dj Vegas

    Dj Vegas Member

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    where would you find the secondary air pump?
     
  20. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow...
    Staff Member Moderator Audi S3

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