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Thread: knocking noise.

  
  1. #1
    Razzzle
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    knocking noise.

    Alright Lads,

    I've discovered a knocking noise when dropping off lowered curbs when coming off the driveway, and when going over bumps at low speeds.

    Have had the car on the jack today and when driving its deffo coming from the drivers side.

    It was suggested from previous threads that this is the arb drop linkage causing this problem, but i've had a wiggle of the linkage and its seems to be very solid - any other suggestions?

    Daz.

  2. #2
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    turbo will's Avatar
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    best to check it when the car is on the floor and not jacked up

  3. #3
    Razzzle
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    Have now checked the passenger side just to make sure and that is exactly the same as the drivers side, no movement up and down or anything like that.

    Also checked both sides without the use of a jack as suggested and seems OK to me.

    Stumped is how I would describe this right now

    Daz.

  4. #4
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    have you tried bouncing the car to see if it goes up and down then settles ?
    meaning to check the operation of the shockers ?
    just a thought

  5. #5
    Razzzle
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    Yup, the car is 'bouncing' up and down and then settles.

    Daz.

  6. #6
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    However solid the drop links feel, they can still knock under load when driven. At less than £10 each (buy MK5 ones, they're cheaper and fit the MK4 fine) they're worth changing every year or so to keep things tight.

  7. #7
    Razzzle
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    Its a mk5 ive got, should I go for metal ones ? or just plastic ones again?

    Cheers

    Daz.

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    If you want to spend the money on metal ones, go right ahead. They're not cheap though (and imo the plastic ones will do fine).
    My "flame red" Astra X14XE
    A work in progress

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    Sorry for sounding a bit daft - and for resurrecting a month-old thread - but what exactly are drop links? I've got this knocking/jarring over lower-speed bumps and uneven surfaces as well, a mate at work suggested that the problem might be the bushes but from my morning's research on here it seems drop links may be to blame. I have a haynes manual for my car (1.4 mk5 05-plate 84k miles) and I can't find drop links in it anywhere. Could someone please educate me as to what they are and look like, and how easy they are to replace?

    Many thanks!
    I do go on a bit, don't I?

  10. #10
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    The droplinks are the bars which sit between the front anti-roll bar and the suspension strut. Not sure if they have another name, but they are simple, one bolt at either end and less than £10 each from Vauxhall on trade club.

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