BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
ESS Tuning
Post Reply
 
Thread Tools Search this Thread
      10-27-2011, 01:39 AM   #1
ImStig
Private First Class
ImStig's Avatar
United_States
2
Rep
106
Posts

 
Drives: Acura TL 04
Join Date: Aug 2010
Location: Bellevue, WA

iTrader: (0)

Engine emits rattling noise between 2k to 3k rpm

Hi all,

Since about 2k miles, my M3\'s engine makes a rattle noise between 2k to 3k rpm for higher gears (3rd to 6th, more pronounce on higher gears) when I try to accelerate harder on those gears. The rattle is more pronounced with the power bottom on. On the other hand, no rattles in 1st or 2nd gear, or neutral. The sound emits from the driver side of the engine bay it seems.

This is the first v8 for me, and I was wondering if this is common? My transmission is 6mt.

Thanks for the guidance here!
__________________
2004 Acura TL (Current)
2000 E46 323i (Sold 2007)
"Some say, he has a stripy top, just like mine" - James May
Appreciate 0
      10-27-2011, 10:16 AM   #2
Rshane
M-Flight Member
Rshane's Avatar
United_States
13
Rep
1,087
Posts

 
Drives: 2011 E92 M3
Join Date: Jul 2010
Location: San Antonio, Texas

iTrader: (0)

Yep, most likely the normal intake rattle. It got really loud for me when I installed my Akrapovic exhaust.
__________________
2011 Le Mans Blue M3// Black extended Novillo w/ Blue Grey Aluminum trim/DCT/ZTP/ZCW/ZPP/ZCP Premium Sound ///Akrapovic Evolution Exhaust

2012 Le Mans Blue 135i M Pkg DCT
2013 Ford F150 FX4 Supercrew
Appreciate 0
      10-27-2011, 12:31 PM   #3
Boosted-M
Second Lieutenant
5
Rep
244
Posts

 
Drives: BMW ///M
Join Date: Apr 2011
Location: Northeast

iTrader: (1)

Does it almost sound like the engines pinging and only makes the noise under light load between 2k to 3k rpm..?
Appreciate 0
      10-27-2011, 06:08 PM   #4
ImStig
Private First Class
ImStig's Avatar
United_States
2
Rep
106
Posts

 
Drives: Acura TL 04
Join Date: Aug 2010
Location: Bellevue, WA

iTrader: (0)

The rattling noise is like a fluttering sound, but only there when under load (more aggressive throttling)
__________________
2004 Acura TL (Current)
2000 E46 323i (Sold 2007)
"Some say, he has a stripy top, just like mine" - James May
Appreciate 0
      10-30-2011, 07:30 PM   #5
SPQR M3
First Lieutenant
SPQR M3's Avatar
Australia
9
Rep
328
Posts

 
Drives: 2009 E92 325i
Join Date: Jan 2009
Location: Australia

iTrader: (0)

Yes, I have the exact same sound under the same conditions. I would love to know the reason too.
Appreciate 0
      11-01-2011, 06:57 AM   #6
Locksmythe
Second Lieutenant
Locksmythe's Avatar
United_States
4
Rep
213
Posts

 
Drives: 2009 e92 M3 AW/FR
Join Date: May 2009
Location: Virginia

iTrader: (0)

It is normal engine noise coming back out through the intake. If you are hearing it more on the left side that is because the hood vent on the left is connected to the intake. The dual-layer 2008-2009 US intake filter silences the rattle, at cost of air flow. Newer US or Euro filters and aftermarket filters do not.

After 9 months with an aftermarket filter I put the stock 2009 back in.
Appreciate 0
      12-27-2012, 07:46 PM   #7
Thebigbus
Private
Thebigbus's Avatar
1
Rep
87
Posts

 
Drives: 2009 e90 M3 DCT
Join Date: Nov 2012
Location: Central Texas

iTrader: (0)

So is the general consensus that this is all airbox related?? I test drove a used m3 dct yesterday, and heard, upon acceleration, a rattling/fluttering...like wind trapped under paper....from what seemed to be the front left part of the vehicle? Almost a "crackling" or "rustling" actually...hard to describe. It wasn't there when the car was revved in neutral...
Appreciate 0
      12-27-2012, 09:01 PM   #8
phlliphethe
New Member
0
Rep
7
Posts

 
Drives: bmw
Join Date: Dec 2012
Location: see you body

iTrader: (0)

The dual-layer 2008-2009 US intake filter silences the rattle, at cost of air flow.
__________________
Appreciate 0
      12-27-2012, 09:23 PM   #9
aussiem3
Lieutenant Colonel
aussiem3's Avatar
Australia
30
Rep
1,683
Posts

 
Drives: Goggomobil
Join Date: Jul 2007
Location: Kangaroo land

iTrader: (1)

Garage List
2014 BMW X5 30d  [0.00]
2007 E92 M3  [0.00]
Very interesting. Five years and 35k km later I am yet to hear this. I am about to install a BMC filter sometime today. Mine is a '07 car.
__________________

2007 E92 6MT - Silverstone II with /// Performance Exhaust with ACM Test Pipes and BPM Sport Stage II Dev-Tune - Proper engine warm up, 12-monthly oil change, Castrol TWS 10w-60
2014 F15 X5 3.0d
Appreciate 0
      12-27-2012, 10:33 PM   #10
Munit
Banned
8
Rep
220
Posts

 
Drives: m3
Join Date: Oct 2012
Location: CA

iTrader: (0)

Totally normal. Its not the airbox, its rather that it is a very open, large air filter and box so emitting all the sounds from the engine which what you here is the clatter and natural resonance of the valvetrain at those RPMS' and gears.

Love the mechanical sound of this car!

The one thing is you really never should be in a situation where you are accelerating in this rpm range in a high gear. You need to keep this thing about 5k rpms so it is never an issue in real life driving, atleast for me!
Appreciate 0
      12-27-2012, 10:46 PM   #11
Thebigbus
Private
Thebigbus's Avatar
1
Rep
87
Posts

 
Drives: 2009 e90 M3 DCT
Join Date: Nov 2012
Location: Central Texas

iTrader: (0)

I hope that is what I'm hearing! Can definitely live with it if that's what's going on. I guess I mainly noticed it at lower speeds, when I would have to be in the lower rev range. Soot is the "air under paper" sound, correct". Almost a hybrid rattle/flutter sound?

Freaked me out, though . I have a GTO rt now, which makes a few noises, but not like that.
Appreciate 0
      07-23-2013, 04:59 AM   #12
qbix
Private
0
Rep
70
Posts

 
Drives: E92 M3 DCT, F15 3.0d
Join Date: May 2012
Location: EU

iTrader: (0)

This forum is just amazing! Was looking for an answer to exactly same issue and guess what! Found it here

My car (late 2012) makes exactly same noise when accelerating at higher gears and low rpm.

It means green light to mod my car now
Appreciate 0
      07-23-2013, 09:02 AM   #13
Longwong
Banned
9
Rep
371
Posts

 
Drives: e92 m3 catless
Join Date: Jun 2013
Location: USA

iTrader: (0)

Part is a rattle but also I have logged data and if you are in too high of a gear and bogging the engine the knock control system is going wild as given this engine, if rpms are too low and you are in a high gear you are loading the system and the engine will knock unless the knock control starts working overtime so not sure if its a combination of dialed back combustion as it shows on the logging data.
Appreciate 0
      07-23-2013, 06:26 PM   #14
MMMMM3
First Lieutenant
MMMMM3's Avatar
Australia
3
Rep
336
Posts

 
Drives: 2011 Jerez Black e90 M3 DCT
Join Date: Jan 2008
Location: Sydney, Australia

iTrader: (0)

Quote:
Originally Posted by Longwong View Post
Part is a rattle but also I have logged data and if you are in too high of a gear and bogging the engine the knock control system is going wild as given this engine, if rpms are too low and you are in a high gear you are loading the system and the engine will knock unless the knock control starts working overtime so not sure if its a combination of dialed back combustion as it shows on the logging data.
Does this sound like a fast clattering noise? Mine does it between 1,600 and 2,200 revs on partial load but stops if you take your foot off the accelerator pedal altogether. Much more noticable at lower speeds as well. I've had the car for 12months but only noticed it last week! Must be because the stereo is usually turned up.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 02:39 PM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST