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Thread: Rumbling noise

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    Default Rumbling noise

    A hollow, rumbling noise appears when going over rough road. Front sub-frame mountings have been replaced. No leaks from suspension struts. Could it be anti-roll bar, but I've been told this is ok?
    Radiator mountings replaced. Any ideas?

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    rumbling noise is normally tyre noise...some brands transmit awful amounts of noise on poor roads...what brand do you have fitted?..if it was antiroll bar/links/bushes/springs it would be more of a rattle..

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    Default Rumbling noise

    Dunlop tyres all round to recommended pressure. It sounds like a knocking noise. Not apparent when going over road humps if square on. Noticeable if off side or near side hits a drain or bad road. Not noticed it when on a bend when the car is leaning. Does this help?

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    it does..the detail of drain and bad road makes me think that it could well be the antiroll bar tie links knocking...of it was a single 'boing' then it would point to the spring mod needed, but the knocking is classic antiroll bar links

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    Default Rumbling noise

    How can I find out if spring mod has been done? Is it easily visible?

    Before replacing front tyres I noticed that the outer edge of near side tyre had worn more than rest of tyre. Even wear on offside tyre. Is this more evidence of roll bar problem?

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    nope, thats evidence of a tracking fault...the steering needs aligning..

    you can tell if the spring mod has been fitted by removing the road wheel and looking at the springpan on the damper..the tail of the spring should have a plastic sleeve on the end of it if it's been modded..about 1 coil will be covered by it..

    my hunch is still antiroll bar link from what you have told me..

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    Default Rumbling Noise

    Thanks for this. I think I'll get the bushes and links replaced at the same time. From what I've researched, the job can be done without removing the sub-frame. Should keep the labour cost down! Parts are cheap.

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    yep, links are about a tenner each and the bushes a few quid each....no need to remove the subframe at all...a dead easy job to do...no more than an hours labour..

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    Default Rumbling Noise

    You have been a great help. Thank you.
    Will let you know the outcome, hopefully later this week.

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    keep us informed..it all helps someone else..

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