BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      05-04-2016, 11:28 PM   #1
Level3
1/2 Asian Sensation
Level3's Avatar
United_States
205
Rep
408
Posts

Drives: 2011 BMW M3 e92 ZCP
Join Date: Dec 2014
Location: Raleigh, North Carolina

iTrader: (2)

Garage List
Popping sound from under dash - FIXED

I'm a relatively new 1 series owner. My cars a 2008 135i. Ever since I purchased it, it's had this thumping, popping, creaking sound whenever I would hit humps or dips at an angle. Only at an angle... straight on it wouldn't do it. I thought it might be a subframe bolt or something because it made the noise when the cars body would flex going into dips and stuff. Anyways, the sound seemed to be coming from somewhere in or under my dash. I was pretty certain it wasn't anything suspension related. After looking ALL OVER for anything loose underneath I checked the the brace that runs in a V in the engine bay... sure enough... these bad boys were loose. I gave them a good tightening and hopped in to test. Sound gone. WHEW! So anyways, if you have similar symptoms... perhaps it's these bolts. Sorry, I have no idea what these bolts are called or attached to... some sort of brace. (I'm a car n00b). Picture below shows the ones I tightened.

__________________
All too easy...

Last edited by Level3; 05-05-2016 at 12:03 AM..
Appreciate 0
      05-04-2016, 11:52 PM   #2
kprocivic
Lieutenant Colonel
kprocivic's Avatar
772
Rep
1,575
Posts

Drives: ecoboost s to the t
Join Date: Apr 2014
Location: 92346

iTrader: (7)

Good job on the write-up. Fyi the picture you posted is of a n55, some people may get confused since you stated you have an 08 which uses the n54. Nonetheless good job.
Appreciate 0
      05-05-2016, 12:04 AM   #3
Level3
1/2 Asian Sensation
Level3's Avatar
United_States
205
Rep
408
Posts

Drives: 2011 BMW M3 e92 ZCP
Join Date: Dec 2014
Location: Raleigh, North Carolina

iTrader: (2)

Garage List
Quote:
Originally Posted by kprocivic View Post
Good job on the write-up. Fyi the picture you posted is of a n55, some people may get confused since you stated you have an 08 which uses the n54. Nonetheless good job.
Oopsies, you're right. I just scanned pics on the web and found a good one that showed those braces good. Fixed with correct engine... but applies to either... n54 or n55.
__________________
All too easy...
Appreciate 0
      08-12-2019, 08:21 AM   #4
WindUp
New Member
3
Rep
11
Posts

Drives: BMW 135i
Join Date: May 2019
Location: Tennessee

iTrader: (0)

Every day I pull into a parking lot that causes the body to flex and get a "pop" or a "thump" in the area of the dashboard. It is strong enough to be felt in the steering wheel. Can someone post a picture of which bolts I need to tighten under the car? TIA
Appreciate 0
      08-26-2019, 06:25 PM   #5
Bam002
New Member
United_States
35
Rep
23
Posts

Drives: '14 Dinan M5, Stage 2 135i
Join Date: Aug 2016
Location: San Francisco

iTrader: (0)

Quote:
Originally Posted by Level3 View Post
I'm a relatively new 1 series owner. My cars a 2008 135i. Ever since I purchased it, it's had this thumping, popping, creaking sound whenever I would hit humps or dips at an angle. Only at an angle... straight on it wouldn't do it. I thought it might be a subframe bolt or something because it made the noise when the cars body would flex going into dips and stuff. Anyways, the sound seemed to be coming from somewhere in or under my dash. I was pretty certain it wasn't anything suspension related. After looking ALL OVER for anything loose underneath I checked the the brace that runs in a V in the engine bay... sure enough... these bad boys were loose. I gave them a good tightening and hopped in to test. Sound gone. WHEW! So anyways, if you have similar symptoms... perhaps it's these bolts. Sorry, I have no idea what these bolts are called or attached to... some sort of brace. (I'm a car n00b). Picture below shows the ones I tightened.

can we get a repost of the photo?
Appreciate 0
      09-02-2019, 02:29 PM   #6
WindUp
New Member
3
Rep
11
Posts

Drives: BMW 135i
Join Date: May 2019
Location: Tennessee

iTrader: (0)

I got under the car and found the bolts that hold the brace on the underside of the car. I'm afraid to over-torque them and snap them off. How many pound feet of torque should I put in those bolts? A lot of them thread into the aluminum subframe in the front.
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 12:13 PM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, 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