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  1. #1
    1st Gear

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    Vibration from the diff?

    I have a vibrating noise from the diff (sounds like its dragging) when in first gear on full lock?

    I have changed the diff oil (used genuine Audi stuff)

    Made no difference

    Seems to get louder when it's warm after a long journey

    If the diff is shot would a diff off an allroad a6 fit?

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  3. #2
    Turkster's Avatar
    Bro.Paul 2.5TDI Quattro Sport

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    all i know about diffs is its best to change "like 4 like" as they can off set your speedo and quattro set up,

  4. #3
    1st Gear

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    they all do it
    test drive another but they all make a noise on full lock pull away

  5. #4
    1st Gear

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    It's the same engine, just auto on the allroad mines manual, but I'll take that on board. Thanks

  6. #5
    Neutral

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    They defo all do it

  7. #6
    1st Gear

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    Seems strange they all do it, sounds wrong.

    Is their a reason why? Or should I stop worrying about it and accept it how it is?

  8. #7
    1st Gear

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    its the diff winding up
    it working hard when on full lock
    if you think 1 wheel is nearly stationary and the other is moving quite a distance so the diff is working at its optimum hence the noise
    been with audi since the original quattro and before and they have all made this noise
    So dont worry!

  9. #8
    1st Gear

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    Reason I ask is me dads s3 doesn't make the same noise, nothing like it

  10. #9
    3rd Gear

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    4WD drive system on the S3 is totally different to the A4, S3's are FWD until slip happens and then power sent to the back using the haldex system......

    A4's use old school permanent 4WD with torsen front/centre/rear mechanical diffs which are pretty much bombproof, worked for VAG for over 10 years, never saw a diff failure......
    03MY 52 reg 1.9 TDi 130PS Quattro Sport Avant - 170bhp remap, RNS-E+OEM bluetooth, B7 wiper arms/blades, 4300K HID+nightbreakers/LED sidelights, rear tints, new lights all round, new front/rear screens, frt armrest, s-line kit, cruise/DIS, B7 gearknob/aluminium trims, parking sensors, black grilles, RS4 RARB, S4 front end, black 18" RS6 alloys

    Still waiting..... S4 rear bumper, exhaust tips, coilovers, leather recaro's.... phew...

  11. #10
    1st Gear

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    I know the s3 doesnt have the same diff as the a4. The s3 has a haldex which only sends power to the rear wheels when required so most of the power is sent to the front in normal conditions.How old is ur dad's s3 btw?

  12. #11
    1st Gear

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    If you all it's fine I'll go with that

    S3 on a 59 plate tony

  13. #12
    1st Gear

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    Quote Originally Posted by DAZ1985 View Post
    If you all it's fine I'll go with that

    S3 on a 59 plate tony
    S3 still should be a haldex as mentioned above. I would go test mine and report bk but i carn't as ive just traded my a4 quattro in , i think mine did it on full lock aswell.

 

 

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