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Go Back   E46Fanatics > Tuning & Tech > DIY: Do It Yourself

DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 08-07-2007, 10:20 PM   #1
area51alienware
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Rear Deck Rattling From Bass!!!

my rear deck is rattling from the bass in my 330ci and i need to know how to fix it and anyone help me please?!?!?!
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Old 08-07-2007, 11:01 PM   #2
KYC
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You can take out the rear seat and shove old T shirts under the rear deck. That's what I did and the inside rattling stopped. I also just sound deadened my trunk lid and the inside of the rear quarter panel. That stopped 90% of the rattling and actually makes the bass much more precise.

Hope that helps!
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Old 08-08-2007, 12:26 PM   #3
DirtyMidget
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I have the same problem in my 325ci. I am going to stuff up some socks in there and see how it goes. Right now I have both my back seats down and it has made a huge difference. But I don't want to go around with my back seats down and someone taking a look, seeing my amp and suddenly thinks take it for themselves.
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Old 08-08-2007, 12:27 PM   #4
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I did something similar... Took out the subs and stuffed 3 tennis balls under teh rear deck. No more annoying rattles from back there.
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Old 08-08-2007, 12:36 PM   #5
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same thing happened to me. i stuffed some thick card board in there. no more rattle for me
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Old 08-08-2007, 01:29 PM   #6
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I had some wires that were rattling. I just laid down inside my trunk and used a few zip ties.
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Old 08-08-2007, 02:36 PM   #7
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If you remove the HK subs that are attached inside the roof of your trunk, you will see several holes between where the subs used to be. If you put a long bolt thru there with a nut on the end and tighten it, this will apply pressure on the back shelf from the bottom (inside the trunk)

Basically, you are pressing the layers in your back shelf together with a bolt/nut, which stops it from rattling. I did it and it works great. There is a DIY with pictures on here somewhere. Do a search for HK rattle fixes or something
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Old 08-08-2007, 11:37 PM   #8
IAmHollyWood
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dynamat maybe?
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Old 08-09-2007, 10:59 AM   #9
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Dynamat won't help much since your HK subs are pounding against a thin top panel. That's where the bass comes through into your cabin. I use a bolt/nut to hold it in place (as described above). I think using towels or bedsheet may dampen or block out some bass but I guess tennis balls work as well.
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Old 08-09-2007, 02:25 PM   #10
DinanBMW330
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Here is the DIY with pictures.

http://www.cardomain.com/ride/262483/2
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Old 08-09-2007, 03:10 PM   #11
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Take out the hk and jam 3 tennis balls in there 1 on each sid and 1 in the middle never rattle again.
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Old 08-13-2007, 12:01 PM   #12
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wow thats jokes, i thought i was the only one stuffing t shirts in the back. looool
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Old 04-22-2008, 10:43 PM   #13
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I just did the "bolt" method and I'm more than happy. I was motivated after I put my Dice Silverline in the car. I did one thing different and folded a microfiber towel a few times and placed that between the bolt and the rear deck. The bolt was sitting flush and I figured the cloth would help reduce vibration just that little extra bit. So far I'm happy, never really was able to appreciate the HK, its really not that bad especially for a factory setup.
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Old 04-22-2008, 10:49 PM   #14
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anyone tried to fix the problem with the stock sound system (no hk)
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Old 04-22-2008, 11:03 PM   #15
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Nobody suggested turning down the bass yet?
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Old 01-10-2013, 02:04 AM   #16
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Nobody suggested turning down the bass yet?
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Old 01-10-2013, 08:29 PM   #17
BringsMeWomen
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I have 2 alpine type r's 12' in my 330ci and have some rattling but its not terrible actually but im gonna need to try some of these suggestions to fix it.
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Old 01-14-2013, 07:39 PM   #18
Zatarain
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Just tried the sock trick and it does work for sure. I bought some tennis balls but couldnt get em in there. Long story short, my bass is a lot crispier now.
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