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Thread: Noise over speedhumps

  1. #1
    Regular Member Hyperhart's Avatar
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    Vehicle InfoStats

    Vehicle : Astra GTC VXR

    Trim : VXR

    Engine : 2.0t

    Year : 2013

    Default Noise over speedhumps

    There is probably quite a few threads about something like this but i can't be bothered to look. I own a 2004 GSi that when i go over a speedhump i get a kind of knocking noise (seems to be nsf), go over really slowly it's fine but go over a little too fast there is a knock. Fine on smooth roads and don't hear anything on slightly bumpy road. Springs were replaced by the last owner not too long ago and they seem to be fine, could it be the anti roll bar link or the bushes.
    Any advice.

  2. #2
    Full Member Caveman_nige's Avatar
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    Vehicle InfoStats

    Vehicle : Vectra and a Signum

    Trim : top of the line in both

    Engine : Z18XE,Z19DTH,Z20NET

    Year : 2006

    Default

    i would say its probably your anti roll bar bushes, its certainly the cheapest part to replace to probably the best one to start with..
    My old Signum, the animal; she now rests in pieces in several other members cars.. https://www.vectra-c.com/forum/garag...vehicle&id=200
    The wifes vec show car, started as a standard daily driver and ended up like this. https://www.vectra-c.com/forum/garag...vehicle&id=709



  3. #3
    Regular Member ditchp's Avatar
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    Vehicle : Vectra cdti estate

    Trim : Get a

    Engine : Dirty diesel

    Year : 2006

    Default

    can be either ARB bushes or drop link's or spring seat's or even rad mount's...
    Midlands Mod Shop - NFFC.

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