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

Just some info...TSB 2014645

Discussion in 'A3/S3/Sportback (8P Chassis)' started by tcardio, Aug 30, 2012.

  1. tcardio
    Offline

    tcardio Active Member

    Joined:
    Sep 13, 2009
    Messages:
    543
    Likes Received:
    71
    I joined the masses with front suspension knocking noise. I found this TSB in the passat section

    Front suspension, Knocking Noise regarding the subframe shifting. I replaced all 6 subframe bolts and put in the two shims and damn, all the noise went away

    7M3499349A x 2
    N 10640301 x 4
    WHT000431A x2
    #1
  2. DaveA3-TDI
    Offline

    DaveA3-TDI Member

    Joined:
    Aug 23, 2009
    Messages:
    249
    Likes Received:
    0
    #2
  3. tcardio
    Offline

    tcardio Active Member

    Joined:
    Sep 13, 2009
    Messages:
    543
    Likes Received:
    71
    You need 4 of those bolts and two of the black ones as stated above. the shims are the same. I get the knock at low speed, turning at os speed, speed bumps and uneven pavement. drove my OCD crazy
    #3
  4. DaveA3-TDI
    Offline

    DaveA3-TDI Member

    Joined:
    Aug 23, 2009
    Messages:
    249
    Likes Received:
    0
    The bolts in the kit are for the 2 inside bolts nearest the exhaust that need replacing. Have you replaced the rest of the subframe bolts at the same time, I couldn't see that mentioned in the TSB?

    What vehicle do you have?

    Thanks
    #4
  5. tcardio
    Offline

    tcardio Active Member

    Joined:
    Sep 13, 2009
    Messages:
    543
    Likes Received:
    71
    Yes, i replaced all the subframe bolts at the same time. best to just replace them all
    #5
  6. DaveA3-TDI
    Offline

    DaveA3-TDI Member

    Joined:
    Aug 23, 2009
    Messages:
    249
    Likes Received:
    0
    Which of the part numbers you supplied above are for the 4 sub frame bolts? I have fitted the ECS kit today and I think it is slightly better but not totally gone so I now want to order up the remaining sub frame bolts and change them as well.
    Where are the 4 sub frame bolts located that you replaced? Are they all at the back of the sub frame or are there a couple at the front that I can't see under the undertray?
    What torque did you tighten them upto?

    Thanks in advance.
    Last edited: Sep 1, 2012
    #6
  7. The Engineer
    Offline

    The Engineer Member

    Joined:
    Apr 25, 2011
    Messages:
    341
    Likes Received:
    19
    Any news or results from these bolts yet, i think my TDI suffers the same knocking. it drives me crazy!!! :keule:

    I have the car scheduled to be looked at this week for subframe movement, just wondered of I need the four bolts or just the two?
    #7
  8. DaveA3-TDI
    Offline

    DaveA3-TDI Member

    Joined:
    Aug 23, 2009
    Messages:
    249
    Likes Received:
    0
    I replaced the 4 bolts in the end and touch wood it has stopped, replacing just the 2 inner bolts on there own didn't work for me.
    #8
  9. The Engineer
    Offline

    The Engineer Member

    Joined:
    Apr 25, 2011
    Messages:
    341
    Likes Received:
    19
    Thanks for the reply Dave, would it be possible to point me in the right direction for the bolts.
    The below numbers dont mean much to me:

    7M3499349A x 2
    N 10640301 x 4
    WHT000431A x2
    #9
  10. DaveA3-TDI
    Offline

    DaveA3-TDI Member

    Joined:
    Aug 23, 2009
    Messages:
    249
    Likes Received:
    0
    The knocking sound has returned!!!!!! I will hopefully be looking at the underneath of the car again this evening so will report back tomorrow.
    #10
  11. The Engineer
    Offline

    The Engineer Member

    Joined:
    Apr 25, 2011
    Messages:
    341
    Likes Received:
    19
    I feel for you Dave, mine drives me nutty.

    I get the knock when going slow over bumps, I also seem to get a jerk when changing gears as if there is excessive movement or play somewhere in the engine bay.

    I fitted a powerflex dog bone bush a few months ago that made little or no difference.

    Keep us informed... :friends:
    #11
  12. DaveA3-TDI
    Offline

    DaveA3-TDI Member

    Joined:
    Aug 23, 2009
    Messages:
    249
    Likes Received:
    0
    Replaced both bolts that you can get to up through the bottom of the wishbone and still hasn't sorted it!! Also fitted a powerflex dog bone bush which has also made no difference apart from transmit more vibration through the car!! Will be removing that later today.

    At a loss to what it could be now, did you get your car looked at?
    #12
  13. InTTruder
    Offline

    InTTruder New Member

    Joined:
    Nov 26, 2013
    Messages:
    6
    Likes Received:
    1
    Ted- From the colonies here.
    Have we a link to a pdf of this document? Stateside we are just learning abut it (see the 2014 prefix), so we're baffled finding it. My TTRS had the thunk, and I found all sorts of consternation.

    TIA
    Last edited: Nov 26, 2013
    #13
  14. Marshy
    Offline

    Marshy Active Member

    Joined:
    Nov 7, 2013
    Messages:
    758
    Likes Received:
    166
    When I had my mk2 Leon a few years back this was a known problem.
    i replaced the bolts and fitted the shims which cured the noise.
    I wasn't aware Our cars suffered from this.
    #14
  15. InTTruder
    Offline

    InTTruder New Member

    Joined:
    Nov 26, 2013
    Messages:
    6
    Likes Received:
    1
  16. InTTruder
    Offline

    InTTruder New Member

    Joined:
    Nov 26, 2013
    Messages:
    6
    Likes Received:
    1
    The Leon shares a number of components with the A3/8P chassis.
    #16
  17. davc
    Offline

    davc Foursprung Duck Technik

    Joined:
    Jan 14, 2013
    Messages:
    221
    Likes Received:
    35
    #17

Share This Page