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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 10-19-2008, 07:01 PM   #21
Zlatty
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This guide wins. Well done!
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Old 10-23-2008, 09:18 PM   #22
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This is awesome. Unfortunately, I've got the HVAC whistling noise... and a few other rattles due to my bass. And it's not even turned up that high

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Old 10-24-2008, 12:46 AM   #23
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After all the rattles I found, I still have to track down 2-3 more. Then I'll move to exterior
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Old 10-24-2008, 01:09 AM   #24
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After locating the rattle caused by the heat shield banging against the car body near the left rear wheel, I have no more rattles. The warning triangle still bounces on its tray in the trunk. I am debating with myself whether there is any point of carrying that around. A rear shock mount or some other bushing still squeaks very lightly and infrequenty somewhere at the back, but not enough to annoy.

Even with no more rattles, the cabin is still not as quiet as I want it to be. Any road noise entering the cabin gets bounced around by the cabin leather. This I can do nothing about. Although this is far less annoying any any rattle.
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Old 01-14-2009, 01:11 AM   #25
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More updates..

Source 18: Vibrating noise near passenger seat
Cause: The seat occupancy sensor wires come out of their guides and vibrate against the bottom seat springs. This is usually caused by valeting people who stick their industrial vaccuming machines under the seats and not thinking what they might break. The seat occupancy sensor wire is in a thick plastic tube which forms a U shape making it vibrate easily specially on uneven road surfaces. This is the same case with the driver's seat but you don't hear it often because when you are sitting in the car, the bottom seat spring is loaded and touches the ocupancy sensor wire, minimizing rattles.
Solution: Remove first aid box, take a flashlight and examine bottom seat area for loose wires. Carefully re-insert occupancy sensor wire in its guides and check for movement. If it still shakes/vibrates, take the sensor wire out of its guides again and place a layer of cloth tape around it and re-insert. Should be fine for years to come or until the sensor dies.
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Old 02-05-2009, 06:22 AM   #26
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Happy I stumbled accross this thread, I actually don't have (as far as I can tell) any rattles from the doors or front passenger area, but tonnes of annoying squeeks and rattles from the rear. I'll check out those headrests, seatbelt guides and window gaskets asap!
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Old 02-05-2009, 06:53 AM   #27
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Originally Posted by Safar View Post
Happy I stumbled accross this thread, I actually don't have (as far as I can tell) any rattles from the doors or front passenger area, but tonnes of annoying squeeks and rattles from the rear. I'll check out those headrests, seatbelt guides and window gaskets asap!
If you play with rattles, soon you will realise rattles are masked by other rattles. Until you eliminate the more dominant ones, you won't know you don't have rattles in those places you think you don't. With the rear noises, I don't think you can avoid taking apart the rear deck. Based on my experience of rattle hunting, I think BMW took absolute no care in putting the plastic pieces together in the car. Even if they did, they probably just used lubricants that would have dried up after a couple of years. To eliminate all rattles in the car, you literally have to disassemble the entire interior and put it back together again after you dealt with all the plastic contact surfaces.
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Old 02-05-2009, 08:56 AM   #28
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Thanks, this is awesome. My 2002 330 Ci convertible is just a cacophany of squeaks and rattles - I've chalked it up to "willowy structure due to convertible" and "convertible in general" - the most obvious noises all come from the top, which I think trying to chase those is a losing proposition. But I will definitely see if I can't find some of these others you've noticed - obviously, things like "rear deck rattle" and stuff don't apply to my car, but things like the noises coming from the dash and front doors certainly do apply.

Thanks!!
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Old 02-05-2009, 08:58 AM   #29
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Fantastic write up
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Old 02-05-2009, 09:01 AM   #30
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Old 02-05-2009, 09:23 AM   #31
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Originally Posted by GoingNuts View Post

Even with no more rattles, the cabin is still not as quiet as I want it to be. Any road noise entering the cabin gets bounced around by the cabin leather. This I can do nothing about. Although this is far less annoying any any rattle.
I know this post is old but you can take out your seats and carpet and apply a layer of sound deadening material to the entire floor. This should reduce road noise significantly. I've wanted to try this for awhile after reading that website with the civic guy who wrapped his whole car with dynamat and foam deadener, anyone do this?

btw, great write up. As soon as I get a garage (hopefully soon with a new house) I am going to tackle every noise I can. No rattling for me but plenty of 'creaks' and a really bad creaking from the passenger seat when someone is sitting in it that is just too much.
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Old 02-05-2009, 09:56 AM   #32
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My fix is it just get a louder stereo, or blame them on your passenger being to fat....if they mention the squeaks
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Old 02-05-2009, 10:33 AM   #33
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nice post.

I had a bad rattle (like a teaspoon against glass!) from the rear of the car. It turns out it was the black tube (part of the roll-over protection) that runs out the bottom of the rear headrest (drivers side in my case). I havent found a good fix as its all inaccessible but I have opened the flap on the top of the headrest and pushed some polystirene in to wedge the top of the roll bar tight agaist the inside of the headrest. This seems to work but Im seeking a better solution.

Im getting a high pitched rattle from the rear passenger side around the window (but not window) Is this likely to be the trim around the arm rest?

Also my passenger squeeks when going around corners but only with somebody sat in in. Ive greased the runners but that hasnt helped.

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Old 02-15-2009, 05:37 PM   #34
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Back with more...

Source #19
Rear seatbelt / window motor cover
Cause
The small plastic cover that goes over the rear window motor touches the pillar and the rear seat plastic (specially if you have fold-down seats), causing a very nasty sound when going over uneven surfaces.
Solution
Replace the push/lock pin that secures the cover with a new one, apply a thin layer of cloth tape below the cover and around it at contact areas.You can easily spot the contact areas because the plastic will be glossy there.

Source #20
Hood/Trunk rubber stop pads
Cause
Over time they get dry and hard and when going slowly over uneven surfaces, the slight hood/trunk movement due to flex creates some annoying sounds that are transfered in the cabin.
Solution
Apply silicone grease over the rubber stops both front and rear. Silicone grease will soften and lubricate rubber.

I'm left with 1-2 isolated noises now, 1 from near passenger side/dash and another one from passenger seat area.
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Old 03-31-2009, 04:06 AM   #35
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#2 - trunk holes? like remove the speakers? or can you access from the trunk? This is a great thread, thanks.
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Old 03-31-2009, 04:14 AM   #36
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You can access them from the trunk.




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Old 03-31-2009, 06:09 AM   #37
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great work list

i don't have any(probably do, just having too much fun w/the car to notice) yet, but i'll know where the fix is!
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Old 03-31-2009, 06:24 AM   #38
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Quote:
Originally Posted by paraklas View Post
Source #9: Knocking sound (plastic to softer plastic) around passenger side
Cause: That thing on the roof of the car that you hang your hand from it(sorry don't know how it's called) tends to get loose and vibrates against its metal guides.


It is called the "oh sh!t" bar.


Thanks for the guide. I'm on a quest now attacking creeks and knocks!!
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Old 03-31-2009, 01:54 PM   #39
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hey thanks for the really super helpful post para!
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Old 03-31-2009, 02:32 PM   #40
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I am having an extremely hard time with two rattles in my coupe, 1st is teh silver door handle on the pass. side, not hte actual handle to open but the silver trim piece....2nd are the front headrests!!! cloth tape might work..thanks !
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