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messy rear suspension and unstable rear end , Help please!

Discussion in 'A4/S4 forum(B5 Chassis)' started by kninio, Nov 12, 2007.

  1. kninio
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    kninio Member

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    [Nov 12, 2007]
    Hello ,

    I have audi a4 v6 , FWD , the problem is the rear end of the car is like loosy and not stable , i feel as if it have loosen wheel nuts any body know why is that any experience about this?

    I droven another one 4 cylinders , and the rear was stable and as it was solid in the ground , while my car is sport edition which is lowered and the other one normal hight.

    Note , rear shock absorbers brand new genuine the red one , and the axle beam guide bushes is replaced last week also genuince and still the same issue.

    Help please
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  3. Shifty
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    Shifty Avvve it!

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    [Nov 12, 2007]
    they have adjustable camber on rear? maybe the settings out?
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  4. Shifty
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    Shifty Avvve it!

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    [Nov 12, 2007]
    or maybe just not put back together well, mite have loose suspension bolts...yikes
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  5. Randomjim
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    Randomjim Active Member

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    [Nov 12, 2007]
    Mines been feeling a bit rear end hapy recently. 75mph coming off a motorway on a fairly tight slip road was a bit dodgy. Interested to see what people suggest..
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  6. kninio
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    kninio Member

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    [Nov 12, 2007]
    To Shifty , my car is not quattro , and what do u mean by adjustable camber on rear?

    about loosing suspension bolts , i wanna check this too..

    TO Randomjim : i cant get in corner over 100 km/h , while in the other car i drove i passed the same corner 140km/h and it was still stand in ground , my car feel like it will drift.

    any one have this experience? could it be the rear axle beam damaged? or what can make this issue?
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  7. kninio
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    kninio Member

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    [Nov 13, 2007]
    could it be the shock mount?
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  8. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Nov 13, 2007]
    I would change the axle bushes, thats what sorted mine out. I fitted a set of OEM ones to mine,transformed the handling. Stopped the rear stepping out suddenly
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  9. kninio
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    kninio Member

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    [Nov 13, 2007]
    Byzan , i changed them last weekend , but same issue , do u think the shock mounts can make this too?
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  10. Siena
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    Siena Active Member

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    [Nov 13, 2007]
    My '97 A4 quattro has a twitchy rear end too.

    I'm fitting Bilstein sport dampers, Eibach springs, OE real bushes and a full set of front lower and upper arms.

    Will evaluate handling, fitting the lot tomorrow.
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  11. waveform2
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    waveform2 * J e d i *

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    [Nov 14, 2007]
    wow glad mine feels great no disrespect but i dont fancy the bill for that lot altho if you can fit yourself thats a diff story i guess...
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  12. AwesomeSarah
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    AwesomeSarah Member

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    [Nov 14, 2007]
    Mmm check out for something loose
    maybe think about an ARB?
    Sarah
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  13. kninio
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    kninio Member

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    [Nov 14, 2007]
    Sarah , what is the ARB , My car is not quattro :( , this week i will change the muffler and i will lie down under the car and inspect it , and i will take out the rear shocks and recheck them and change the mounts bushes... bearing.. we will see what will be , hope it will be solved!
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  14. jcb
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    jcb Active Member VCDS Map User

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  15. kninio
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    kninio Member

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    [Nov 14, 2007]
    ah ARB , The anti roll bar is built in the axle beam mount.

    Jcb , what is geometry?
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  16. jcb
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    jcb Active Member VCDS Map User

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    [Nov 14, 2007]
    when you do bushes, ARB, suspension etc it is essential to have your four wheel geometry checked. even if you are 2wd your wheels should all be pointing in the same direction and have the correct camber/castor.
    The layout for the suspension components on the A4 leaves a wide adjustment in the camber and toe in (wheels like this \ / or like this / \)

    If for example you had overly positive camber on a rear left wheel it would lose grip, potentially quite suddenly depending on tyres, on a righthand corner.
    add this to messed up tyre pressure, uneven tyre wear or tyres that are different brands/ages on different sides and it can dramatically affect handling

    you need a proper 4 wheel geometry place not the posy kwikfit set up.
    costs about £50-90 depending on work done etc. well worth it before you start taking bits off.
    they should have done one already when the did the work you described
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  17. kninio
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    kninio Member

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    [Nov 14, 2007]
    ah , i changed bushes by myself and shocks too , this week i will change the front control arms and make for it wheel alignment , but i will first change the rear shocks mounts , i think the strut mounts wearing and making this play.. i will change all those to be sure nothing left old then we will see.

    could it be the rear subframe (axle beam) , get that shape / \ from heavy load i mean the rear wheel spreaded? or no?
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  18. AwesomeSarah
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    AwesomeSarah Member

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    [Nov 14, 2007]
    Hi
    Yes if you did the fitting yourself , it could be worth getting it set up
    The geo will do the tracking front and rear
    Worth doing or you could also get more tyre wear on the front and rear tyres
    Sarah
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  19. macca
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    macca Member

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    [Nov 14, 2007]
    worth doing rear shock top mounts, they're not expensive.
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  20. jcb
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    jcb Active Member VCDS Map User

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    [Nov 14, 2007]
    not unless you have been carrying 3 ton nuclear devices
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  21. kninio
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    kninio Member

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    [Nov 15, 2007]
    Jcb , aha now i know what is the problem , how did u know i been carrying that? :p
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  22. Siena
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    Siena Active Member

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    [Nov 15, 2007]
    A quick update:

    Following the unpleasant discovery of the twitching rear of my '97 A4 quattro, I had already decided to upgrade.

    Yesterday, I fitted 4 Bilstein Sport dampers, (yellow) 4 Eibach sport springs, (lowers by 30mm) a complete set of front lower arms, and all rear swivel arm bushes.

    The front arms weren't bad, but while it was all stripped down, it made perfect sense to replace them. Rear bushes weren't too bad either, at least not the lower ones.

    The upper swivel arms however, had had it. The were so bad, that upon removing the through bolt, the centres fell out! I pressed new ones in, and after re-assembly of the whole lot, took her for 4 wheel alignment.

    She handles razor sharp, no twitching or knocks at all. She also sits a fair bit lower too.

    Well worth the money spent. The whole job, bar wheel alignment took me 2.7 hours.
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  23. JayB5UK
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    JayB5UK Member

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    [Nov 15, 2007]
    I've not read all the posts, but my old 99 was like this @ 120,000 miles.
    Had the rear axle bushes done. BINGO! Sorted. No snaking from the rear over bumps anymore.
    Only £12 each and an hour to do, my local mechanic did it without removing the wheels, they just dropped the front of the axle down.
    #22
  24. kninio
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    kninio Member

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    [Nov 16, 2007]
    Siena : how low the eibach spring make the car? lower then the oem sport springs? or almost identical but they are harder?

    does the spring lose theire resistance with years?

    JayB5UK : I did the same job at home , just remove the bolts of the bushes and lowerd the axle beam a bit , and made a a tool for taking out the bushes and fiting them and it took me like 2 hours to make it donne.
    #23
  25. Siena
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    Siena Active Member

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    [Nov 16, 2007]
    @ Kninio: Eibach set-up lowered the car approximately 30mm. My car did have the optional Sport Pack, so was lower than standard A4 quattro.

    Handling is a lot tighter, but not harsh, which is what I wanted. It's still very comfortable, as the 30mm reduction in height still gives enough compliance.
    #24
  26. kninio
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    kninio Member

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    [Nov 17, 2007]
    Siena : how lower they are then the oem sport pack? 1 cm? , i need to make my car tighter in the road.

    does the springs has a life time? that they become soft and less resistance then they should be?
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  27. kninio
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    kninio Member

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    [Nov 17, 2007]
    Siena , do u have picture for your ride now with the eibach?
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  28. Siena
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    Siena Active Member

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    [Nov 18, 2007]
    Kninio, my car is a lot lower now than OEM sport pack car.

    Of course, springs MAY get softer with age, only natural. The original OEM sport springs were 10 years old, so I should imagine life of Eibach to be similar, or better.

    Pictures...

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    #27
  29. waveform2
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    waveform2 * J e d i *

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    [Nov 18, 2007]
    looks alot lower than std :) nice
    #28
  30. kninio
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    kninio Member

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    [Nov 18, 2007]
    hmm , your car looks like as low as my car now with the oem sport pack , i think my spring is dead and that is why it fall down as your eibach kit , i think that is the reason why its hapy in the rear?, i will post pictures too and compare it .


    Your car is a quattro? or normal?

    the kit you bought is 30mm x 30mm in front? right? or even more lower?

    from where you get it?
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  31. kninio
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    kninio Member

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    [Nov 18, 2007]
    Siena , which interior do u have in your car? can u post a picture?
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  32. Siena
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    Siena Active Member

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    [Nov 18, 2007]
    Kninio, mine is a quattro. Yes, kit is 30mm front and rear. I got the Bilstein dampers through Audi, the Eibach springs through an independent supplier in the UK.
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  33. Siena
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    Siena Active Member

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    [Nov 18, 2007]
    Kninio, interior is stock. For now...

    [​IMG]
    #32
  34. kninio
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    kninio Member

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    [Nov 18, 2007]
    aha ,

    Siena , i bought interior like your but its in the light grey color instead of dark as your , but the driver sit side show a little wear , do u know a supplier sale same fabrique to repaire it? , or do u know some one has a complete interior like your that want to sale it? i would buy the fabriques from him for the interior price.

    cheers :)
    #33
  35. kninio
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    kninio Member

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    [Nov 25, 2007]
    I found out what is the mater , the right rear one is cracked :( , any body have a pair of rear springs? front wheel drive sport edition , with out rust?

    I would like to buy some , any body have idea how much price them new?

    cheers
    #34

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