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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 12-08-2010, 03:46 PM   #41
sean96gsr
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Quote:
Originally Posted by rizzo2008 View Post
Uggh did you guys notice it early on and did it progressively get worse or did it just sort of appear one day? I have noticed something similar for 10,000+ miles now but it was so slight and hard to notice that I have never given it much thought till now.
Mine did it from day 1. Became slightly more common until I traded it in at 135k. BMW of New London was useless, wouldn't fix it for me. I noticed that it would happen when the car was warm - not hot, not cold like first thing in the morning, but warm, like if it had been off for 30 minutes to an hour. It also did it if the car was running in a car wash, when there was water being sprayed into the grilles by the rinse cycle.

Like everyone else, pressing the clutch, revving the engine, or lightly pressing the shifter against a gear would make it stop.
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Old 06-13-2011, 10:04 PM   #42
djmajestik
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Has anyone ever solved this problem? I have changed the DISA also thought it had to do something with a leak I had.. Yet the problem is still there.. Ive been searching around and no one seems to have a definite answer.. My mech sugg its a leak because he was able to reproduce the sound by opening the oil cap and he was comparing it to a leak somewhere.. But hmmm.. Im still lost
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Old 08-07-2011, 01:44 AM   #43
anm3itbe
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I wanted to bump this thread because I feel like the solution is simple. I have this problem as well on my ZHP. All you'd really need is to do is raise the idle much like TRM did for me on my e36 M when I installed the 8lb flywheel. Raising the idle quiets down the chatter naturally. Similarly, I'm almost positive that anyone who has this problem can rev the engine to about 800-900rpm and get rid of the chatter. All that we'd need is a software (like shark injector) that just gives the idle a little bump right out of the box and the problem should be solved. Anyone else think this?
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Old 08-07-2011, 10:15 AM   #44
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I put in a new stock flywheel and TOB a few thousand miles ago. Not sure if it's different than before, but I only ever notice some chatter [when a window is open] during feathering when backing into the garage and when I shut the car off while in the garage. It absolutely never happens during idle even when RPMs might get down to around 700.
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Old 08-07-2011, 11:28 AM   #45
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Originally Posted by anm3itbe View Post
I wanted to bump this thread because I feel like the solution is simple. I have this problem as well on my ZHP. All you'd really need is to do is raise the idle much like TRM did for me on my e36 M when I installed the 8lb flywheel. Raising the idle quiets down the chatter naturally. Similarly, I'm almost positive that anyone who has this problem can rev the engine to about 800-900rpm and get rid of the chatter. All that we'd need is a software (like shark injector) that just gives the idle a little bump right out of the box and the problem should be solved. Anyone else think this?
My car sometimes makes the same noise captured in the video here. It did it with the stock flywheel/clutch/TOB and it still does it with an OE replacement flywheel/clutch/TOB. It did seem to disappear for a few weeks after everything was replaced but that didn't last long. The noise isn't your typical gear chatter that you would associate with a lightweight flywheel and raising the idle speed doesn't help one bit - my car idles about 900 rpm and still makes the noise from time to time. When the car starts making this noise, a quick jab of the throttle or even simply putting the car in gear and driving always seem to make the noise go away until the car is shut off again. My current theory is that the noise comes from the dual mass flywheel itself.
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Old 08-07-2011, 02:44 PM   #46
TerraPhantm
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My old ZHP never made that kind of noise at idle. It made a very similar noise when slipping the clutch to get into 1st or reverse gear; the noise would stop if I gave it a little more gas (I guess the revs were dropping ever so slightly low while engaging those gears). It also made a similar sound very briefly if I turned off the engine without having the clutch depressed.
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Old 11-05-2013, 07:42 PM   #47
lividfanatica
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Mine just started doing this, but one interesting thing of note... It started about the same time i had idle trouble. Car dips really low when i put the clutch in (when coming to a stop not just sitting idle). Found a crack in my intake tube. Maybe the lower idle as a result of the leak is causing me to notice? I am glad to read that in general this chatter is normal and will not leave me stranded somewhere.
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Old 02-28-2014, 09:06 PM   #48
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Wow, so many pages, so few real solutions...As an engineer I've got to assume its a design problem with the flywheel "rubbing" For the record my Indy (former factory e46 specialist, now self employed) told me that this is a known (BMW engineers) issue with no known solution and no known damaging effects... His solution was to simply depress the clutch when turning the motor off.. FWIW I've got 135k on the clock (04 zhp sedan) original clutch/FW/TOB...Still grabs great... No CDV delete... And rattles just like everyone's....also, if you know a solution. Pleeeeeease make my day ..


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