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Thread: Rear Knocking

  1. #1
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    Default Rear Knocking

    Got a knocking from the rear, just going over bumps, had it on ramp, look at rear anti roll bar bushes, and they seem fine, the roll bar seems solid when having a tug in the middle but if i touch either end i get the knocking, is that still going to be the mounts? or is it possible drop links?

    its a 2005 vectra cdti 1.9

    and can anyone recommend me some new bushes if it is indeed that, or drop links if its that, ive looked at ebay at the bog standard ones, i know they are up to job but just wondering if anyone had links to others or anything like that

    cheers

  2. #2
    Ex Vec-C Admin Ian-Highlander's Avatar
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    Vehicle : Insignia Tourer

    Trim : Elite

    Engine : 2.0 CDTI (160ps)

    Year : 2010

    Default

    Most likely suspects are the rear upper control arms, very common on all the Vecs and Signums. You'll see them referred to on here as "banana arms" sometimes too because of their shape.
    "Doing a good job here is like wetting your pants in a dark suit, you get a warm feeling but nobody else notices"
    Maptun Tuned 2.0T Estate - click HERE for mods list.
    Brentwood 2012: Winner, Saturday Show. Hull 2012: Winner, Best Estate. Hull 2013: Winner, Best Estate & Runner Up, Best I.C.E

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  3. #3
    Regular Member skidmark1's Avatar
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    Vehicle : 2.2 Direct

    Trim : SRI

    Engine : YH 2.2 petrol

    Year : 2006

    Mileage : 85000

    Default

    I had this and as my car was under warranty took it back to the steelers and they fitted a drivers side control arm, this did not cure the knocking so took it back again and they fitted new Bilstein gas rear shocks and all sorted

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    are they easily changeable? are they connected to the rear arb?

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    Quote Originally Posted by skidmark1 View Post
    I had this and as my car was under warranty took it back to the steelers and they fitted a drivers side control arm, this did not cure the knocking so took it back again and they fitted new Bilstein gas rear shocks and all sorted
    its defiantly not the shocks, i had it up on the ramps at work and looked, and the noise from driving can tell its not. just googled the banana arms, are they attached to the drop links or rear arb at all? not many clear pics on google

    cheers for help btw

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    http://www.vectra-c.com/forum/showthread.php?t=46991
    This will help
    I am having to do mine too
    leave the car on the floor then hold the top of the tyre and pull and push to check for movement
    Jacko

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    Default

    help just replaced rear left and right control arms and still a knocking noise on rear right cannot find any ideas

  8. #8
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    Default banana arms

    Quote Originally Posted by Ian-Highlander View Post
    Most likely suspects are the rear upper control arms, very common on all the Vecs and Signums. You'll see them referred to on here as "banana arms" sometimes too because of their shape.
    changed both still got knocking what next

  9. #9
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    Default

    Hi all,

    I'm looking in to some rear knocking on my '53 Vectra. Assuming it is the banana arms, is there anything else that ought to be changed whilst the suspension is in bits? like anti roll bar bushes? i'm at about 70K miles

    Cheers

    Mevans

  10. #10
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    Default

    change the bushes and it will b as quiet as a mouse, ive done mine today, 1 thing i found was if u havent got the wheels in just the right place the anti roll bar will feel thight on the bushes but jack up 1 wheel a little bit and there is so much play u will wonder why it hasnt dropped off

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