THE LARGEST BMW 2-SERIES FORUM ON THE PLANET
2Addicts
2Addicts
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
2Addicts | BMW 2-Series forum Technical Topics N20 (228i) / B46 (230i) Engine, Transmission, Exhaust, Tuning Exhaust Flapper Tech Bulletin

Post Reply
 
Thread Tools Search this Thread
      07-15-2015, 02:36 PM   #1
OpenAir
Captain
OpenAir's Avatar
United_States
386
Rep
884
Posts

Drives: Enzo F23 228i
Join Date: May 2015
Location: MD, USA

iTrader: (1)

Garage List
2015 BMW 228i  [0.00]
Exhaust Flapper Tech Bulletin

So, my exhaust flapper started to rattle the other day, and I crawled under to take a look and when I pulled on the spring clip, "pop" it came right out!

Called the dealership and explained the situation and sure enough, tech bulletin came out for "rattle noise" in exhaust. They did the repair and all is well again...something about the heat shield and bolts.
Appreciate 0
      07-15-2015, 03:25 PM   #2
2msport
Captain
United_States
194
Rep
756
Posts

Drives: '14 228 MT
Join Date: Apr 2014
Location: NY

iTrader: (1)

Quote:
Originally Posted by OpenAir View Post
So, my exhaust flapper started to rattle the other day, and I crawled under to take a look and when I pulled on the spring clip, "pop" it came right out!

Called the dealership and explained the situation and sure enough, tech bulletin came out for "rattle noise" in exhaust. They did the repair and all is well again...something about the heat shield and bolts.
Very interesting! I'm pretty sure I've heard a rattle... Although I have the MPE installed so I guess it doesn't apply to me. I thought I'd try and spray some grease back there.
Appreciate 0
      07-15-2015, 04:42 PM   #3
OpenAir
Captain
OpenAir's Avatar
United_States
386
Rep
884
Posts

Drives: Enzo F23 228i
Join Date: May 2015
Location: MD, USA

iTrader: (1)

Garage List
2015 BMW 228i  [0.00]
Quote:
Originally Posted by 2msport View Post
Very interesting! I'm pretty sure I've heard a rattle... Although I have the MPE installed so I guess it doesn't apply to me. I thought I'd try and spray some grease back there.
My service manager didn't mention if it was just oem mufflers or if it went across all mufflers, it was about the servo, and your mpe has a servo. I'd check!
Appreciate 0
      07-15-2015, 05:11 PM   #4
horsepower_and_hounds
Brigadier General
horsepower_and_hounds's Avatar
United_States
1167
Rep
3,239
Posts

Drives: '15 M4 BSM
Join Date: Aug 2012
Location: Charlotte

iTrader: (6)

I unplugged mine on the 235.....no rattle
Appreciate 1
      07-15-2015, 07:22 PM   #5
OpenAir
Captain
OpenAir's Avatar
United_States
386
Rep
884
Posts

Drives: Enzo F23 228i
Join Date: May 2015
Location: MD, USA

iTrader: (1)

Garage List
2015 BMW 228i  [0.00]
Quote:
Originally Posted by ehagerty View Post
I unplugged mine on the 235.....no rattle
That's great! Mine wasn't plugged in and I had the rattle...it's a servo thing so it's not effected by power.

I also noticed that putting your car in sport + and unplugging the harness doesn't change the valve position...hence why most are saying it makes little to no difference.
Appreciate 0
      07-15-2015, 08:15 PM   #6
horsepower_and_hounds
Brigadier General
horsepower_and_hounds's Avatar
United_States
1167
Rep
3,239
Posts

Drives: '15 M4 BSM
Join Date: Aug 2012
Location: Charlotte

iTrader: (6)

I unplugged it when it was cold and I guess it has been unplugged almost from the beginning it is tight enough not to rattle. Now sometimes I think I hear something but not enough to worry about and i also have the mPE
Appreciate 0
      07-15-2015, 08:31 PM   #7
pikcachu
Brigadier General
pikcachu's Avatar
987
Rep
4,762
Posts

Drives: M235i (F22 Red angel)
Join Date: Jul 2011
Location: undisclosed

iTrader: (0)

Quote:
Originally Posted by OpenAir View Post
So, my exhaust flapper started to rattle the other day, and I crawled under to take a look and when I pulled on the spring clip, "pop" it came right out!

Called the dealership and explained the situation and sure enough, tech bulletin came out for "rattle noise" in exhaust. They did the repair and all is well again...something about the heat shield and bolts.
can you take a picture where the spring clip is ?
Appreciate 0
      07-15-2015, 09:01 PM   #8
OpenAir
Captain
OpenAir's Avatar
United_States
386
Rep
884
Posts

Drives: Enzo F23 228i
Join Date: May 2015
Location: MD, USA

iTrader: (1)

Garage List
2015 BMW 228i  [0.00]
Quote:
Originally Posted by pikcachu View Post
can you take a picture where the spring clip is ?
Well...I'd have to jack the car up again cause I'm too fat to crawl underneath!

I can say that the clip is a u-shaped rod about the thickness of a coat hanger and it is compressed when the solenoid is attached to the exhaust bracket. Both the solenoid and the actual flapper valve have a straight groove that the spring sits in, and the compression is what holds it in place. It fills the 1/2" gap between the flapper and the solenoid.

Helpful?
Appreciate 0
      07-15-2015, 09:06 PM   #9
pikcachu
Brigadier General
pikcachu's Avatar
987
Rep
4,762
Posts

Drives: M235i (F22 Red angel)
Join Date: Jul 2011
Location: undisclosed

iTrader: (0)

Quote:
Originally Posted by OpenAir View Post
Well...I'd have to jack the car up again cause I'm too fat to crawl underneath!

I can say that the clip is a u-shaped rod about the thickness of a coat hanger and it is compressed when the solenoid is attached to the exhaust bracket. Both the solenoid and the actual flapper valve have a straight groove that the spring sits in, and the compression is what holds it in place. It fills the 1/2" gap between the flapper and the solenoid.

Helpful?
Ok... i'll see if I can locate it thanks...
Appreciate 0
      07-15-2015, 09:10 PM   #10
OpenAir
Captain
OpenAir's Avatar
United_States
386
Rep
884
Posts

Drives: Enzo F23 228i
Join Date: May 2015
Location: MD, USA

iTrader: (1)

Garage List
2015 BMW 228i  [0.00]
I did take a pic when it was out of the car:

Appreciate 1
      08-14-2015, 08:56 AM   #11
M-tavo
Second Lieutenant
M-tavo's Avatar
United_States
78
Rep
219
Posts

Drives: M235i
Join Date: Dec 2014
Location: CT

iTrader: (1)

Do you know what they changed? I have the same rattle, but I changed exhaust so I can't bring it in for that.
Appreciate 0
      08-17-2015, 02:38 PM   #12
OpenAir
Captain
OpenAir's Avatar
United_States
386
Rep
884
Posts

Drives: Enzo F23 228i
Join Date: May 2015
Location: MD, USA

iTrader: (1)

Garage List
2015 BMW 228i  [0.00]
The heat shield...which is the metal cover that protects the servo.
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



All times are GMT -5. The time now is 03:18 PM.




2addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
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