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Thread: Rattle diagnosis

  1. 8th January 2012, 01:28 PM #1
    Marshall's Avatar
    Marshall
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    Rattle diagnosis

    Hi all,
    I have an annoying rattle...
    • occurs when the rear wheels go over bumps, also on a rough road, but doesn't even have to be too rough
    • very "tinny" sound, sounds like sheet metal
    • sounds like a sheet that is held on by a bolt that is loose
    • I cannot tell if it comes from the middle of the underside or more towards the rear or more towrds the front...
    • I can hear it clearer with the passenger window down
    • heat shields seem solid, no loose bolts etc
    • I have beat the crap out of the underside with a rubber hammer and cannot seem to replicate it
    Could it be the cats?
    How would I be able to tell if it is?
    Any ideas?
    Thanks,
    Pete
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  2. 8th January 2012, 04:59 PM #2
    Grumbles
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    It may also be a loose brake caliper shield that has cracked and is rattling or a shield has moved and is contacting brake pipes etc.
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  3. 8th January 2012, 06:24 PM #3
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    clubagreenie
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    Cracked shock shaft cover rattling against the body?
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  4. 8th January 2012, 08:05 PM #4
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    Marshall
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    Quote Originally Posted by clubagreenie View Post
    Cracked shock shaft cover rattling against the body?
    Don't think so. relatively new shocks. they seem OK
    I am going to take the wheels off tomorrow and check the caliper shields...
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  5. 8th January 2012, 09:33 PM #5
    33chinacars
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    Have you checked exhaust system & mufflers. Could be something has let go inside muffler. Just a thought.

    Gary
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  6. 9th January 2012, 07:38 AM #6
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    glenhendry
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    I have a similar sound in the front, and yesterday I believe I have diagnosed it to the rear UJ on the front prop shaft. It is really loose. I am trying to find somewhere in Brisbane who can fix it today! I am not sure if it is DIY. Time for reading...

    Good luck. It is annoying chasing rattles sometimes.
    Now: 2005 L322 Vogue 4.4 M62TU (Black)
    Before: 2000 P38A HSE 4.6 - stately capability | 2008 Kluger KX-S | 2004 Forester | 2000 Yamaha XJR1300 | 1993 VR Calais | 1974 HQ Statesman - 308 V8 | HT | HK
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  7. 9th January 2012, 03:56 PM #7
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    Got it

    Took the front NS wheel off, all peachy.
    Took the rear NS wheel off, shield solid. Happened to put my hand on the caliper and gave it a shake...rattle rattle rattle!
    I could see the springy thing from the top of the brake pad poking out the top, not right me thinks. So I took out the bottom bolt and levered the caliper up, reseated the brake pads, put it all together and NO MORE RATTLES!


    yet...
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  8. 9th January 2012, 04:33 PM #8
    Grumbles
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    Good to hear that all is now quiet Marshall.
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  9. 10th January 2012, 12:52 AM #9
    Hoges
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    Quote Originally Posted by Marshall View Post
    Got it

    Took the front NS wheel off, all peachy.
    Took the rear NS wheel off, shield solid. Happened to put my hand on the caliper and gave it a shake...rattle rattle rattle!
    I could see the springy thing from the top of the brake pad poking out the top, not right me thinks. So I took out the bottom bolt and levered the caliper up, reseated the brake pads, put it all together and NO MORE RATTLES!


    yet...
    "Good Find" as they say ... Question remains: what caused it to loosen and "pop" in the first place? Caliper pins etc all properly located?
    cheers
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  10. 10th January 2012, 07:00 PM #10
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    Quote Originally Posted by Hoges View Post
    "Good Find" as they say ... Question remains: what caused it to loosen and "pop" in the first place? Caliper pins etc all properly located?
    cheers
    the "tool" that put the brake pads in probably didn't take care when they put the caliper back in place.
    all the pins are good...
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