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Nearside front knocking

Discussion in 'Audi S4/A4/A4 Cab (B7 Chassis)' started by Newbos, Oct 26, 2012.

  1. Newbos
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    Newbos Member

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    [Oct 26, 2012]
    Hi all

    Since i have had the car i have had a nearside front knock when i go over un-even ground/train crossing/cobbled roads. It sounds like a normal fault that points towards upper arms, arb link etc.. but for love or money i cant find the knock. I have had it at a local garage twice that ive used for years and they cant find it either. They also confirm that there is a knock and im not going mad, so just opening it to you guys to see if you have had a similar experience.

    Cheers
    Simon
    #1
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  3. twist123
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    twist123 Member

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    [Oct 26, 2012]
    Check engine mount for leaks, they usually throw a code when they go.
    #2
  4. Newbos
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    Newbos Member

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    [Oct 26, 2012]
    Here is my Log
    Thursday,25,October,2012,23:07:08:32264
    VCDS Version: Release 11.11.3
    Data version: 20120401



    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------


    Chassis Type: 8E - Audi A4 B6/B7
    Scan: 01 02 03 08 09 0F 11 15 16 17 18 36 37 45 46 55 56 57 65 67
    69 75 76 77

    VIN: WAUZZZ8E47A054887 Mileage: 147290km/91521miles
    -------------------------------------------------------------------------------
    Address 01: Engine Labels: 03G-906-016-BLB.clb
    Part No SW: 03G 906 016 JD HW: 028 101 265 4
    Component: R4 2,0L EDC 000SG 8245
    Revision: --H02--- Serial number:
    Coding: 0000072
    Shop #: WSC 06335 000 00000
    VCID: 6ED9D061798C249

    No fault code found.
    Readiness: 0 0 0 0 0

    -------------------------------------------------------------------------------
    Address 03: ABS Brakes Labels: 8E0-910-517.lbl
    Part No SW: 8E0 910 517 H HW: 8E0 614 517 BF
    Component: ESP8 FRONT H06 0140
    Revision: 00000000 Serial number: 00000000000000
    Coding: 0004401
    Shop #: WSC 06335 000 00000
    VCID: 2C5D1A698F10169

    No fault code found.

    -------------------------------------------------------------------------------
    Address 08: Auto HVAC Labels: 8E0-820-043.lbl
    Part No: 8E0 820 043 BJ
    Component: A4 Klimaautomat 2833
    Coding: 00000
    Shop #: WSC 00000
    VCID: 6AD1DC711664C89

    No fault code found.

    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. Labels: 8E0-907-279-8EC.lbl
    Part No: 8E0 907 279 M
    Component: int. Lastmodul ECE 0907
    Coding: 10001
    Shop #: WSC 06335
    VCID: 3C7D2A292C70869

    No fault code found.

    -------------------------------------------------------------------------------
    Address 15: Airbags Labels: 8E0-959-655-94.lbl
    Part No SW: 8E0 959 655 G HW: 8E0 959 655 G
    Component: Airbag 9.41 H12 3730
    Revision: 91H12373 Serial number: 0036M0G2GCRI
    Coding: 0031612
    Shop #: WSC 06335 000 00000
    VCID: 3B7F29357A7E811

    No fault code found.

    -------------------------------------------------------------------------------
    Address 16: Steering wheel Labels: 8E0-953-549.lbl
    Part No: 8E0 953 549 Q
    Component: Lenksáulenmodul 0701
    Coding: 02002
    Shop #: WSC 06335
    VCID: 41835BDD4B92EB1

    No fault code found.

    -------------------------------------------------------------------------------
    Address 17: Instruments Labels: 8E0-920-9xx-8EC.lbl
    Part No SW: 8E0 920 951 E HW: 8E0 920 951 E
    Component: KOMBI+WFS 4 H14 0110
    Revision: 0110 Serial number: 00000000000000
    Coding: 0006401
    Shop #: WSC 00047 210 65525
    VCID: 2C5D1A698C10169

    No fault code found.

    -------------------------------------------------------------------------------
    Address 45: Inter. Monitor Labels: 8E0-951-177.lbl
    Part No: 8E0 951 177
    Component: Innenraumueberw. 0804
    Coding: 00001
    Shop #: WSC 00000
    VCID: EBDF5975999E511

    No fault code found.

    -------------------------------------------------------------------------------
    Address 46: Central Conv. Labels: 8E0-959-433-MAX.lbl
    Part No: 8E0 959 433 CH
    Component: Komfortgerát T3B 4135
    Coding: 07151
    Shop #: WSC 06335
    VCID: 79F3F33D63C2731

    Subsystem 1 - Part No: 8E2959802F
    Component: Tõrsteuer.FS BRM 0606

    Subsystem 2 - Part No: 8E2959801F
    Component: Tõrsteuer.BF BRM 0606

    Subsystem 3 - Part No: 8E0959801E
    Component: Tõrsteuer.HL BRM 0606

    Subsystem 4 - Part No: 8E0959802E
    Component: Tõrsteuer.HR BRM 0606

    No fault code found.

    -------------------------------------------------------------------------------
    Address 56: Radio Labels: 8E0-035-1xx-56.lbl
    Part No: 8E0 035 186 AA
    Component: concert II GRO 0004
    Coding: 01005
    Shop #: WSC 06335
    VCID: 66C9A841027CEC9

    No fault code found.

    End ---------------------------------------------------------------------


    nothing jumps out to me.
    #3
  5. twist123
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    twist123 Member

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    [Oct 26, 2012]
    Not mount then.
    #4
  6. twist123
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    twist123 Member

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    [Oct 26, 2012]
    CV Joint, tracking rod, ARB, bushes? no codes so must be mechanical. Try banging the lower engine covers a bit see if it makes the same noise.
    #5
  7. Newbos
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    Newbos Member

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    [Oct 26, 2012]
    To be honest a few people have said bushes, but its too hard to tell. The noise is definitely metal to metal.
    #6
  8. twist123
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    twist123 Member

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    [Oct 26, 2012]
    Gonna have to get the wheel and arch cover out to check the bushes. Id definitely check these if youve had a second opinion on the track rods etc.
    #7
  9. HEKTOR
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    HEKTOR Member

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    [Oct 26, 2012]
    Dont rule the engine mounts out just because they are not throwing a code.
    #8
  10. Newbos
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    Newbos Member

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    [Oct 26, 2012]
    It doesnt sound like an engine mount if you know what i mean, i could have put money down on it being an upper arm, but its definitely not. Its going to a local VW/Audi specialist next thursday so im hoping they can find it as its driving me mad.
    #9
  11. V6 Quatt
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    V6 Quatt Active Member

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    [Oct 26, 2012]
    I know what you mean had the same on my previous tdi 140 and i was back and forth from garage checked everything ...it sounded like a rattle when on uneaven road passenger side.?? coudnt find it mechanic said wait till it gets louder then come back
    #10
  12. Newbos
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    Newbos Member

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    [Oct 27, 2012]
    So did you ever find it?
    #11
  13. V6 Quatt
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    V6 Quatt Active Member

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    [Oct 28, 2012]
    No but sounds exact symptoms I had
    #12
  14. Newbos
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    Newbos Member

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    [Oct 28, 2012]
    :(. The car drives so smoothly as well, it's just this that's annoying the hell out of me!
    #13
  15. Newbos
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    Newbos Member

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    [Nov 1, 2012]
    Well the car has been at an audi specialist today and even though they can hear the knocking they couldnt find anything on inspection. Great!!
    #14
  16. g00se
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    g00se Active Member

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    [Nov 2, 2012]
    #15
  17. Newbos
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    Newbos Member

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    [Nov 2, 2012]
    Cheers goose, may wait till Xmas is over and change them.
    #16
  18. s3welshy
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    s3welshy Member

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    [Nov 2, 2012]
    hi.
    i had exactly the same symptons on my s3. about five different places looked at it and found nothing.
    i changed the arb drop links yesterday and it has solved it. i have inspected the old units, and there in no play in them at all. but has definatly fixed the problem.

    hope this helps.
    #17
  19. g00se
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    g00se Active Member

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    [Nov 2, 2012]
    Plus, i'm not sure if it's in my head or not, but seems to feel more direct when turning-in... less vague. now feels sort of like my old Mk4 R32

    goose
    #18
  20. Newbos
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    Newbos Member

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    [Nov 2, 2012]
    Mines there when there is less load on that wheel.
    #19

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