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
      01-18-2018, 10:44 AM   #1
EvanAlfred
Enlisted Member
EvanAlfred's Avatar
United_States
13
Rep
36
Posts

Drives: Bmw 135i n55 DCT
Join Date: Jul 2016
Location: Miami, Fl

iTrader: (0)

Dreadful serpentine belt squeal

Hello everyone. My name is evan. I'm a usual here on the forums.
I have owned a 135i 2011 n55 for well over 2 years now.
I've had the DREADFUL SERPENTINE BELT SQUEEL.
Like 5 months into ownership it started happening faintly.
I replaced belt and pulley's but noise still kept on.
8 months into ownership my belt snapped, got sucked in through the vibration
dampner pulley and cause engine failure stopped timing and seizing up.
Fast forward 4 or 5 months when new block is in. Car runs amazing with new motor
But that same f****** noise is back.
Here's a list of everything I've replaced over the last 2 years to try and solve that
squeel.

Not in order. Most in which where fine and never needed replacing.

-Alternator
-Compressor
-Waterpump
-Vibration Dampner
-belt tensioner pulley
-basically all pulleys were replaced with like 4 belts.


Anyone with insight pleasee help!

Update I held my stethoscope to every pulley and heard the source coming from
The deflection pulley(11287578675).
Replaced it and sure enough noise is still there. When holding the stethoscope on the new one... it sounds the same.. wtf is going on here.

HELP!
Appreciate 0
      01-18-2018, 11:04 AM   #2
suspenceful
Major
suspenceful's Avatar
United_States
1013
Rep
1,264
Posts

Drives: 2015 M3, 2008 135i, 2009 335i
Join Date: Feb 2014
Location: WI

iTrader: (9)

I'm sure you've already done this, but I just want to make sure.

I had the same issue.



Turns out, my power steering pulley was loose. It isn't uncommon for the bolts holding it to loosen up or fall out.

__________________
750whp 135i Build | Budget 335i Build | F80 M3 Build
🎬 YouTube channel (35K+ subs): youtube.com/jakespence135
📷 Follow me on Instagram: instagram.com/jakespence
🏁 Shop BMW merchandise: bimmerstreet.com
Appreciate 1
      01-18-2018, 11:26 AM   #3
EvanAlfred
Enlisted Member
EvanAlfred's Avatar
United_States
13
Rep
36
Posts

Drives: Bmw 135i n55 DCT
Join Date: Jul 2016
Location: Miami, Fl

iTrader: (0)

Quote:
Originally Posted by suspenceful View Post
I'm sure you've already done this, but I just want to make sure.

I had the same issue.



Turns out, my power steering pulley was loose. It isn't uncommon for the bolts holding it to loosen up or fall out.


I have checked this yes 😣 thank you so much for the reply though man. I appreciate anyone to take there time to view this as I've spent upwards of 3k in parts. Not including the long block replaced through insurance.
Appreciate 0
      01-18-2018, 11:43 AM   #4
suspenceful
Major
suspenceful's Avatar
United_States
1013
Rep
1,264
Posts

Drives: 2015 M3, 2008 135i, 2009 335i
Join Date: Feb 2014
Location: WI

iTrader: (9)

Quote:
Originally Posted by EvanAlfred View Post
I have checked this yes 😣 thank you so much for the reply though man. I appreciate anyone to take there time to view this as I've spent upwards of 3k in parts. Not including the long block replaced through insurance.
Lucky it was covered under insurance! Sorry about the bad luck, hope you get it fixed.
__________________
750whp 135i Build | Budget 335i Build | F80 M3 Build
🎬 YouTube channel (35K+ subs): youtube.com/jakespence135
📷 Follow me on Instagram: instagram.com/jakespence
🏁 Shop BMW merchandise: bimmerstreet.com
Appreciate 1
      01-18-2018, 12:32 PM   #5
HyeWarrior
Major
747
Rep
1,117
Posts

Drives: 2012 135i DCT
Join Date: Aug 2010
Location: San Dimas, CA

iTrader: (1)

Is the noise constant or comes and goes?
Appreciate 1
      01-18-2018, 12:37 PM   #6
EvanAlfred
Enlisted Member
EvanAlfred's Avatar
United_States
13
Rep
36
Posts

Drives: Bmw 135i n55 DCT
Join Date: Jul 2016
Location: Miami, Fl

iTrader: (0)

Quote:
Originally Posted by HyeWarrior View Post
Is the noise constant or comes and goes?
it's only when car is at operating temperature(fully warm)
Appreciate 0
      02-07-2018, 10:10 AM   #7
EvanAlfred
Enlisted Member
EvanAlfred's Avatar
United_States
13
Rep
36
Posts

Drives: Bmw 135i n55 DCT
Join Date: Jul 2016
Location: Miami, Fl

iTrader: (0)

I have an update for all. I have replaced the tensioner again with the oem bmw part. Along with the new belt. I've been about 2 weeks with the new tensioner and belt. and the squeal is gone. I hope for good.
I believe since the crank vibration Dampner was bad.. it caused too much stress on the new tensioner I installed and funked it up. now with every pulley replaced including the Dampner that caused a ruckus.. It's completely sound.
I'll keep everyone updated so we can get these squealing n55s fixed.
Appreciate 1
BimmerAg425.00
      02-10-2018, 04:34 AM   #8
juld0zer
Lieutenant Colonel
Australia
480
Rep
1,600
Posts

Drives: Prev 135i 7DCT, Now 130i 6sp
Join Date: Jul 2016
Location: 2153

iTrader: (0)

Wow.. lucky to get a new motor for that!

I've heard of harmonic balancers doing funny things but was there much wobble in your old one? How about the new one? I have seen even brand new N55s have wobbly balancers.
Appreciate 0
      02-10-2018, 06:54 AM   #9
Yeineken
Colonel
Yeineken's Avatar
United_States
1298
Rep
2,090
Posts

Drives: '11 135i M Sport
Join Date: Dec 2013
Location: Delmarva Peninsula

iTrader: (3)

Garage List
'11 135i  [8.20]
'16 Ford Hatchback  [0.00]
'15 X5  [10.00]
When my N55 was making noise I replaced the belt, pulleys, and tensioner and the noise came back after a couple days. Ended up being the OFHG slowly leaking oil onto them and causing them to make noise. (Diagnosed by BMW)

Not sure if you've looked into that possibility.
__________________
Appreciate 0
      08-30-2018, 09:13 AM   #10
Cavpilot2k
Chief Warrant Officer
1022
Rep
1,638
Posts

Drives: like a damn lunatic
Join Date: Feb 2012
Location: Boston

iTrader: (0)

I've got a squealing belt now, at least until the engine gets nice and hot.
Haven't done any troubleshooting, but I am hoping to be able to fix it myself.
__________________
"Prius" is Latin for Eunuch.
"Hrothgar": 2012 135i: 6MT M-Sport, BSM/Blk; Nav, Premium, Convenience, HK
Dinan Stage 2 +PPK /// BMW PE /// VRSF CP /// K&N /// Koni Sports /// RSFB Inserts /// MPS4S 225/255 /// Other Stuff
Appreciate 0
Post Reply

Bookmarks

Tags
n55, serpentine belt, squealing

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 07:27 PM.




1addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, 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