Volks AutosChris Nott
Results 1 to 11 of 11
  1. #1
    Reverse Gear

    Status
    Offline
    Join Date
    Mar 2004
    Posts
    15

    Talking knocking from front end

    realize this is probably a common question on here and have checked through the search results but nothing matches my problem that i can see.
    i have an 97 a4 avant with a knocking sound coming from the front end somewhere .
    it occurs mostly when braking but also on certain pot holes or bumps and sometimes when changing gear .
    i can make the knock by tapping the brake pedal whilst the car is slowly moving,it always knocks twice ,once for brake on and again for brake off.
    ive had a good look at the front suspension and tried all the joints and bushes with a pry bar and cant detect any excessive movement or wear,ive also changed one of the engine mounts as this seemed weak but its still there and is slowly getting louder and more frequent .
    i dont want to start replacing parts on a trial and error basis because it could get very expensive but im kinda hating driving the car because of it and need to get it sorted before something drops off .
    i was thinking it could be subframe related as it seems to be coming from under my feet but again theres no obvious wear on the bushes.
    any help sorting this would be greatly appreciated as someone must have had a similar problem in the past.
    cheers
    dazza

  2. # ADS
    ADS
    Join Date
    Always
    Posts
    Many
     
  3. #2
    filipharvey's Avatar
    Amusing Tagline

    Status
    Offline
    Join Date
    Aug 2006
    Location
    Fakenham, Norfolk
    Posts
    518
    It'll most probably be the lower control arm on the suspension as these are prone to go. Mine failed (rather embarasingly) last week, after some time knocking whilst braking etc. Not something I would want to repeat!

    Fairly cheap part to buy to 30-60 depending on quality.

    (Part No. 42230 (Normal Quality) / 42230A (Best Quality) at German Swedish & French)
    Last edited by filipharvey; 11th July 2007 at 18:36.
    Audi A6 1.8T Avant



    Alfa 156 3.0 V6 Veloce


  4. #3
    Turbo Lag FTW's Avatar
    Hate those none insured you know who types

    Status
    Offline
    Join Date
    Feb 2007
    Location
    Carlisle, Cumbria. Not Geordie nor Scotch!
    Posts
    233
    I have same kind of noise when i brake, also does it when I shove the car in reverse. Would it be the same problem?

    I`ll prob take mine into my local Audi specialist to see if they diagnose the same and get a quote while im there.
    Audi A4 1.8T Sport

  5. #4
    Soupie69uk's Avatar
    Owner

    Status
    Offline
    Join Date
    Mar 2004
    Location
    Edinburgh, Scotland
    Posts
    2,752
    Turbo Lags with the braking may be the brake pads moving in the caliper.
    A4 1.8T Quattro

  6. #5
    Reverse Gear

    Status
    Offline
    Join Date
    Mar 2004
    Posts
    15
    mine does the same when lifting the clutch in reverse and sometimes 1st to 2nd when turning on roundabouts etc ,so it could be the same problem

  7. #6
    jcb
    6th Gear

    Status
    Offline
    Join Date
    Sep 2005
    Location
    uk
    Posts
    4,077
    control arm bushes or ball joint

  8. #7
    filipharvey's Avatar
    Amusing Tagline

    Status
    Offline
    Join Date
    Aug 2006
    Location
    Fakenham, Norfolk
    Posts
    518
    I would say by your follow-up lazzaman, that its 99% the control arm. The knocking is caused when the weight of the car is shifted to or from the suspension on that side/end of the car.
    Whether you can change the bushes, I don't know, but the arm itself which includes them is cheap enough, so I would (and did) replace the whole thing!
    Audi A6 1.8T Avant



    Alfa 156 3.0 V6 Veloce


  9. #8
    Reverse Gear

    Status
    Offline
    Join Date
    Jul 2007
    Posts
    17
    The same knocking noise is coming from the front of my car too and when i back up it sounds like somthing is grinding when i apply pressure to the brakes.

  10. #9
    Reverse Gear

    Status
    Offline
    Join Date
    Mar 2004
    Posts
    15
    mine doesn't grind just clonks,a bit like the sound you would get with a knackered engine mount, it also doesn't knock when transferring weight from side to side but more forwards and backwards .for example it wont knock over a speedbump but will knock like hell going up a drop kerb or rough road surface.
    has anyone had any experiance of knackered subframes on the a4 coz if not i guess ive gotta start replacing arms one by one and hope i get lucky .

  11. #10
    scrupes's Avatar
    bloody great extension bodger

    Status
    Offline
    Join Date
    Jul 2004
    Location
    at R88PERS beck and call AGAIN!!
    Posts
    236
    it's deffo one or two of them m8, I recently changed all of them in one go cos i was sick of changing one at a time usually for an mot or with an inspection service, it's a much better car now!
    i opted for a set of all arms, "c" links and track rod ends from ebay 165 delivered from germany! which when coupled with a garage fitting charge of 150.00 isnt too bad. but seeing as the car needed to have the front suspension off i chose to change the springs and shockers for a Weitec suspension kit.

    if you can afford to, change the lot. if you cant, start with the bottom arms first, then the top arms. in my experience that appears to be the way they wear out?
    Last edited by scrupes; 14th July 2007 at 23:49.

  12. #11
    Reverse Gear

    Status
    Offline
    Join Date
    Mar 2004
    Posts
    15
    cheers scrupes .
    i thought i was going to have to weigh out about £500 just for parts ,if the kits are avalible for that little i may as well change the lot.
    do you have a link for the ebay seller and whats the quality like???

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO