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Thread: Noise over speed bumps

  1. #1
    Regular Member spatch's Avatar
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    Default Noise over speed bumps

    Hi, my Vectra makes a graunching noise at the front when it goes over speed bumps. It did it before the front springs were replaced but now it is worse. Long shot but any ideas before I take it back to the dealer?

    Thanks,

  2. #2
    Regular Member s1nglef1sh's Avatar
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    Mine makes a similar noise - although I would say it 'squelches'! lol

    I was thinking its the shocks and will be replacing them for Bilstein B4s soon.

  3. #3
    Regular Member Dan_BlackSRi's Avatar
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    Vehicle : Vectra SRi

    Trim : XP1

    Engine : 1.9 CDTi 150

    Year : 2007

    Mileage : 66000

    Default

    Sounds like Anti roll bar bushes to me....

  4. #4
    Regular Member steve1975l's Avatar
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    Does it only do it when going over a speed bump with both wheels? Could be the radiator mounts. My dealer wasn't interested in repairing them under Network Q warranty, I think they have seen me enough though.

  5. #5
    Regular Member spatch's Avatar
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    Hmmm, anti roll bar bushes..... Difficult to know if it only does it with one wheel, all I know is that it does it with both. Is there an easy check for play underneath??

  6. #6
    Regular Member simon1's Avatar
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    Vehicle : Insignia elite tourer vxline biturbo

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    Engine : 2.0 biturbo

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    ok lads same here spent 2 hrs this morning doing anti roll bar bushes took car out still noise. greased up rad mounts noise has now gone AGHHHHHHHHHHHH.
    off vx in the morning for the newer rad mounts as mine is the older spring type ones... so change rad mounts as easier to do as bushes a pig to do as no room ...

  7. #7
    Regular Member spatch's Avatar
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    Quote Originally Posted by simon1 View Post
    ok lads same here spent 2 hrs this morning doing anti roll bar bushes took car out still noise. greased up rad mounts noise has now gone AGHHHHHHHHHHHH.
    off vx in the morning for the newer rad mounts as mine is the older spring type ones... so change rad mounts as easier to do as bushes a pig to do as no room ...
    Sounds very promising!! I have never looked but is it easy to grease the rad mounts? To be honest I had no ides it was on springs??

  8. #8
    Regular Member mat100edt's Avatar
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    just mount the pavement and drive round the speed bumps! prob solved!!

  9. #9
    Regular Member simon1's Avatar
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    Vehicle : Insignia elite tourer vxline biturbo

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    Quote Originally Posted by spatch View Post
    Sounds very promising!! I have never looked but is it easy to grease the rad mounts? To be honest I had no ides it was on springs??
    new ones are all rubbere lot better .. it seems all the spray gets to them threw the grill and washes grease of the old type

  10. #10
    Regular Member glenboy's Avatar
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    You got a part number Simon1???

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