E90Post
 


Motormavericks
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > N54 Engine Rattle: HELP!



Reply
 
Thread Tools Search this Thread
      11-03-2013, 06:38 AM   #1
driver_02
noobs
South Korea
0

 
Drives: 2009 335xi
Join Date: Jul 2012
Location: Uijeongbu, South Korea


Posts: 98
iTrader: (2)

N54 Engine Rattle: HELP!

So, I've exercised the due diligence and searched for solutions, but my problem doesn't sound like a waste gate problem or drive shaft problems that I've read about and listened to that are detailed on this forum, youtube and google.

That said, here's the issue and I'm not exactly sure when it started. When running through the RPMs (both stationary like the video and moving) I get this knocking sound from under the plastic engine cover. I initially thought it was the radiator fan shroud banging on the radiator until I listened with the hood open.

I am getting an 2A87 error code and I will fix that this week. Hopefully that's might solve the problem.

Any constructive thoughts and suggestions are appreciated.

Here are the video links:



p.s. mods include Catless DPs, DCI, Helix FMIC and JB4. The problem exists both with AND without the tune running.

ALSO: if this is the wrong section of the forum, please let me know and I'll move.

Last edited by driver_02; 11-03-2013 at 07:36 AM.
Appreciate 0
      11-03-2013, 11:46 AM   #2
jacobniell
Private First Class
Denmark
1

 
jacobniell's Avatar
 
Drives: BMW 335i
Join Date: Feb 2011
Location: Denmark


Posts: 166
iTrader: (0)

Garage List
2007 335i  [0.00]
Quote:
Originally Posted by driver_02
So, I've exercised the due diligence and searched for solutions, but my problem doesn't sound like a waste gate problem or drive shaft problems that I've read about and listened to that are detailed on this forum, youtube and google.

That said, here's the issue and I'm not exactly sure when it started. When running through the RPMs (both stationary like the video and moving) I get this knocking sound from under the plastic engine cover. I initially thought it was the radiator fan shroud banging on the radiator until I listened with the hood open.

I am getting an 2A87 error code and I will fix that this week. Hopefully that's might solve the problem.

Any constructive thoughts and suggestions are appreciated.

Here are the video links:



p.s. mods include Catless DPs, DCI, Helix FMIC and JB4. The problem exists both with AND without the tune running.

ALSO: if this is the wrong section of the forum, please let me know and I'll move.
It could be your solonoids failing they control the vanos and are placed in front of the engine towards the front.
__________________
2007 E90 335i
Appreciate 0
      11-03-2013, 04:54 PM   #3
driver_02
noobs
South Korea
0

 
Drives: 2009 335xi
Join Date: Jul 2012
Location: Uijeongbu, South Korea


Posts: 98
iTrader: (2)

thanks.

I'll update when I get them replaced later this week.

Any other ideas?
Appreciate 0
      11-03-2013, 11:21 PM   #4
james008
Captain
7

 
Drives: AW 09 335i
Join Date: Jul 2012
Location: Charlotte


Posts: 644
iTrader: (3)

I hate to say it but it sounds kinda similar to an issue I had back a few months... rod knock... which resulted in a new motor. I sincerely hope it's not that. Link to my vid
__________________
Appreciate 0
      11-04-2013, 08:41 AM   #5
driver_02
noobs
South Korea
0

 
Drives: 2009 335xi
Join Date: Jul 2012
Location: Uijeongbu, South Korea


Posts: 98
iTrader: (2)

now THAT is a disheartening report.

thanks for your post though. it gives an idea of what might be in store!
Appreciate 0
      11-06-2013, 06:03 AM   #6
driver_02
noobs
South Korea
0

 
Drives: 2009 335xi
Join Date: Jul 2012
Location: Uijeongbu, South Korea


Posts: 98
iTrader: (2)

OK... the shop is booked for a couple more days. I did send the vids back to my service manager in the states and their mechanic said that while it could be a rod, since I threw the vans solenoid code that's the first part and that he's heard similar noises from alternators and water pumps. all hope is not lost just yet!
Appreciate 0
      11-09-2013, 11:43 PM   #7
driver_02
noobs
South Korea
0

 
Drives: 2009 335xi
Join Date: Jul 2012
Location: Uijeongbu, South Korea


Posts: 98
iTrader: (2)

So, I cleaned and switched the solenoids. The knock more or less went away for a little bit but now it's back. I'll see if I throw the vans solenoid code for the intake side this time. In the mean time I'm going to order a replacement part since the clean and switch seemed to be the issue (for now).
Appreciate 0
      11-09-2013, 11:56 PM   #8
Jeff@TopGearSolutions
BimmerPost Supporting Vendor
United_States
237


 
Jeff@TopGearSolutions's Avatar
 
Drives: C6 Z06, GSXR-750, 09 335i
Join Date: Dec 2008
Location: TopGearSolutions.com


Posts: 18,050
iTrader: (32)

Send a message via AIM to Jeff@TopGearSolutions
First thing that came to mind was rod knock. I hope I'm wrong.
Appreciate 0
      11-10-2013, 12:11 AM   #9
driver_02
noobs
South Korea
0

 
Drives: 2009 335xi
Join Date: Jul 2012
Location: Uijeongbu, South Korea


Posts: 98
iTrader: (2)

just for my own edification...

rod knock = new engine required

right?

would it be possible to just rebuild?
Appreciate 0
Reply

Bookmarks

Tags
banging, knocking, n54, rattle

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 03:56 AM.




e90post
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