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Thread: Rattle from inside rear of e46 m3 vert

  1. #1
    Join Date
    Dec 2015
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    E46 330ci and e46 m3

    Rattle from inside rear of e46 m3 vert

    Hi I am having the most annoying rattle coming from the rear of my e46 vert m3, basically sounds like plastic rattling or creaking, happens when accelerate and lift off and when go over bumps!I have had the roof up and down and I still makes the noise, also had myself in the back of the car to hear the noise and it sounds like it's coming from the plastic compartment where the roof sits when it goes down, but after taping it and playing with it no noise at all! PLEASE HELP AS THIS NOISE IS KILLING ME! Many thanks

  2. #2
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
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    05 325it 05 M3 95 318is
    Has the subframe mounts been inspected? On the early E-46's it was a known issue that the subframe bolts would get ripped out.
    Darin
    Current:
    05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon (Original Owner)
    05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, Euro Infra-Rot front windshield and a trunkliner! Mr. Go_Fast (Stored for the Winter, 2nd Owner)
    95 318is Montreal Blue Met (297)/Beige(K1SN) a work in progress - Winter Car! (10th Owner; That is what happens when it gets passed around by Soldiers!)
    Past:
    84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/375k+! (2nd Owner)
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    82 528i euro Saphire Blue Met/Blue Leather RIP
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  3. #3
    Join Date
    Dec 2015
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    E46 330ci and e46 m3
    Hi

    No I haven't taken it to a mechanic yet, but I will have to just to get them to check over it in case it is then! Many thanks for your comment! It's just that I've been in the back seats and with the roof up it sounds like it's coming from where the roof goes back into! Would it be quite loud if it is them!? Wayne

  4. #4
    dworthy's Avatar
    dworthy is offline Wagon meister :) BMW Tech Expert
    Join Date
    Nov 2010
    Location
    Baumholder, Germany
    Posts
    10,363
    My Cars
    05 325it 05 M3 95 318is
    Not always, but do get the rear suspension looked at, as these sounds only come when you go over bumps.
    Darin
    Current:
    05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon (Original Owner)
    05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, Euro Infra-Rot front windshield and a trunkliner! Mr. Go_Fast (Stored for the Winter, 2nd Owner)
    95 318is Montreal Blue Met (297)/Beige(K1SN) a work in progress - Winter Car! (10th Owner; That is what happens when it gets passed around by Soldiers!)
    Past:
    84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/375k+! (2nd Owner)
    91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 motor, such a beater, but great on gas! Best was 38 MPG (2nd Owner)
    82 528i euro Saphire Blue Met/Blue Leather RIP
    79 525 euro Green/Green RIP
    79 318 Silver/Black - The first one that got it all started
    M-Flight Member

  5. #5
    Join Date
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    E46 330ci and e46 m3
    Yes it makes the noise going over bumps and also makes the noise when I'm holding the accelerator at 70mph then quickly let of and put foot back on the gas it makes the noise! I'll defo get the mechanic to check over the suspension and the sub bolts!

  6. #6
    Join Date
    Jul 2014
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    Z3,Z4,E36 328is, E90328i

    Rattle metal noise, rear, clunk trunk BMW e46 M3 convertible

    Hello everyone, well, I just fixed my car from a similar noise, here another possibility, I fix everything, RTAB's, sub-frame bushings, I even removed everything from the top, covers inside the trunk, etc etc to discover that the problem was the battery support... this BMW M3 has a very interesting design, and the base uses 5 large bolts... when I removed the battery, I realized 4 of those bolts were loose, and the noise was like if I had a bunch of tools in the trunk doing that rattling noise... I removed everything, cleaned and then tight the bolts using some Loctite for threads...

    I hope this helps some of you.

    I am attaching some pictures too:IMG_8529.jpgIMG_8531.jpgIMG_8532.jpg

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