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Thread: Cicadas under my bonnet!

  1. 14th March 2007, 07:55 PM #1
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    Cicadas under my bonnet!

    Ok, I have this noise, which sounds like a pack of cicardas living under my bonnet.

    Only apparent when moving, not related to engine revs or load and increases and decreases with frequency for no apparent reason. Has been getting louder of late.

    At first I thought it was a brake shield coming loose, but checked them all and it was not that. It sounds like a washer spinning (very loudly) on a loose bolt, but I am buggered if I know where it is. Thought it was exhaust, but it is all fine.

    Any other ideas would be appreciated.
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  2. 14th March 2007, 07:56 PM #2
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    air con compressor?
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  3. 14th March 2007, 08:01 PM #3
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    Quote Originally Posted by landrovermick View Post
    air con compressor?
    It is noisy even if the aircon is off.
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  4. 14th March 2007, 08:06 PM #4
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    does the noise vary with speed......?

    it might be the wheel bearings.....?
    or the brake pads......does braking make it better or worse......?


    or does it do it if you turn the steering......?
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  5. 14th March 2007, 08:11 PM #5
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    Quote Originally Posted by DEFENDERZOOK View Post
    does the noise vary with speed......?

    it might be the wheel bearings.....?
    or the brake pads......does braking make it better or worse......?


    or does it do it if you turn the steering......?
    Zook -- does not seem to be dependent on anything other than the car moving, but not necessarily dependent on speed. It comes and goes, but I cannot seem to make it do it.

    Bumps don't make a difference either. Originally, I thought it was the brake shield and that it was dependent on airflow making it vibrant, but it is not dependent on direction (or steering input).

    Was thinking exhaust manifold as I had a bolt replaced recently, but they all seem OK. I am completely stuffed as to what it is.

    The only thing is that is getting louder which has me concerned.
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    - 'Kimba' ('02 Defender Xtreme 110)
    - 'Ari' (1994 Peugeot 205GTi Classic)

    "...we are all just earrings to the left of our parents, and they are all just haircuts to the left of theirs..."
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  6. 14th March 2007, 08:27 PM #6
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    have you tried jacking up the wheels and spinning them by hand.....?

    check to see if the wheel bearings feel ok.....have you checked you shock bushes........?
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  7. 14th March 2007, 08:32 PM #7
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    Bearings have all been done recently, but will check them out.

    Have not checked the shock bushes will do tomorrow.

    Thanks
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    Noddy
    - 'Kimba' ('02 Defender Xtreme 110)
    - 'Ari' (1994 Peugeot 205GTi Classic)

    "...we are all just earrings to the left of our parents, and they are all just haircuts to the left of theirs..."
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  8. 14th March 2007, 09:16 PM #8
    Graeme
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    Unis?
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  9. 15th March 2007, 07:34 AM #9
    worraps
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    ok sound slike mine did the other day i would check the bottom pully on the aircon as it turns out my bearing had completly collapsed started off as a soft whine then sounded like feedback u get through some car speakers then sounded like what u described after that it went quiet but started to smell of burning rubber may not be teh case but worth a look
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  10. 15th March 2007, 07:42 AM #10
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    I had a squeaky rattle coming form the engine bay, and it was the bonnet hinge. Took the nylon bush out and cleaned it, I don't remember what lube I used, the wrong one will mark the paint.
    Hope this helps.

    Jeff
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