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Clunk when driving over speed bumps

I have a Renault grand scenic, when I drive over speed bumps with both fronts wheels you can hear a really loud clunk.

This only happens when both front wheels go over the bump, if I drive over with just one wheel on the bump no noise from either side.

In normal driving everything seems fine...

Anyone have a idea what it may be.
«13

Comments

  • Drop links
    Anti roll bar bushes
    Springs
    Shocks
    Top mounts
    Wishbone bushes

    Check them all, or get a garage to look at it.
    "Dream World" by The B Sharps....describes a lot of the posts in the Loans and Mortgage sections !!!
  • forgotmyname
    forgotmyname Posts: 32,946 Forumite
    Part of the Furniture 10,000 Posts Name Dropper
    Balljoints, loose steering rack, engine mounts.
    Censorship Reigns Supreme in Troll City...

  • arcon5
    arcon5 Posts: 14,099 Forumite
    Part of the Furniture 10,000 Posts Combo Breaker
    How longs a piece of string
  • Joe_Horner
    Joe_Horner Posts: 4,895 Forumite
    Ninth Anniversary Combo Breaker
    Stress cracks in the shell....

    :D

    Seriously, get it up in the air if possible (or at least very well supported on stands) and give everything Foxy and Forgot have suggested a good shake / pry / wobble for play. Should be pretty obvious when you find it.
  • scotsbob
    scotsbob Posts: 4,632 Forumite
    I would be thinking drop links although some Mazda models get that noise from brake pads rattling in the calipers.
  • Drive slower over the speed humps?
    I'd rather be an Optimist and be proved wrong than a Pessimist and be proved right.
  • Richard53
    Richard53 Posts: 3,173 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    Drive slower over the speed humps?
    As a temporary measure, of course. But don't you think loud clunks from the front wheels need investigating?
    If someone is nice to you but rude to the waiter, they are not a nice person.
  • Others have given/are giving good mechanical advice, I just added a sensible suggestion as some humps are so big as can cause damage.
    I'd rather be an Optimist and be proved wrong than a Pessimist and be proved right.
  • hotbern
    hotbern Posts: 130 Forumite
    I have the same car and experienced exactly the same thing.
    We had to have struts, rods and junctions (?!!!) replaced at a total cost of £500 ish quid. Sorry!
    This was two years ago but I have since started to hear the noises again :-(
    June 2009 - Wii; December 2009 - Fortnum & Mason Hamper; 2009 - Little Red Tractor DVD; How to afford time off work book; April 2010 - Mamas & Papas Pram; May 2010 - Imperial Leather Goodies; Jan 2011 - Trivial Pursuit cards; Narnia goodies; VTech cot mobile (stopped comping!) Nov 2011 - Kiddicare cotbed.
  • arcon5
    arcon5 Posts: 14,099 Forumite
    Part of the Furniture 10,000 Posts Combo Breaker
    Struts, trackrod ends and junctions......
    junctions? Is that a new name for a component :s
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