Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E70) Forum
Arnott
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-22-2022, 03:35 PM
Member
 
Join Date: Jan 2011
Location: Mountain View, A
Posts: 1
lintao2002 is on a distinguished road
2011 X5 35d diesel engine noise

2011 BMX X5 35d 130k miles, recently has engine noise.
I took a video here

https://youtu.be/je7jq7FWZYk

Any idea what the issue is or where the noise comes from?
Reply With Quote

Sponsored Links

  #2  
Old 08-23-2022, 11:35 AM
crystalworks's Avatar
Member
 
Join Date: Jun 2014
Location: SA, TX
Posts: 6,405
crystalworks is on a distinguished road
The "whirring" noise? Sounds pulley or belt related. Maybe an idler or tensioner pulley? Won't know for sure until you do some diagnosis. You can remove the belt and see if the noise goes away... that's usually the first step.

Or, you could try spraying some WD40 on the belt and pulleys to see if the noise changes tone or goes away completely. You should clean the WD40 off after the test.
__________________
2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
Reply With Quote
  #3  
Old 08-23-2022, 11:48 AM
workingonit's Avatar
Member
 
Join Date: May 2021
Location: DFW Texas
Posts: 701
workingonit is on a distinguished road
transmission whine?

I've heard that sound when I let a truck sit for months, and the converter lost most of its' already low fluid level (it was sitting at a steep angle).

Here's a YouTube clip of an TSX with a similar sound:
https://www.youtube.com/watch?v=4b-IdCIb_D0
__________________
01 BMW X5 E53,3.0i-5L40E, 7/13/01
topas-blau,Leder-grau,"resto-project car"

Here:
14 Lexus ES350,3.5L-U660E
09 HHR Panel,2.2L-4T45E
04 Chevy 2500HD,6.0L-4L80E
98 GMC Sierra 1500,5.7L-4L60E

Gone:
66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake
08 Cobalt Coupe,2.2L-4T45E
69 & 75 C10s,350c.i.-TH350
86 S10,2.8L-700R4
73 Volvo 142,2.0L-MT4
72 & 73 VW SuperBeetles,1.6l-MT4
64 VW,1.2l-MT4
67 Dodge Monaco 500 2dr ht.,383c.i.-A727
56 Chevy 210 4dr,265c.i.-PGlide
Reply With Quote
  #4  
Old 08-23-2022, 03:18 PM
Member
 
Join Date: Oct 2010
Location: Atlanta
Posts: 154
sgrice is on a distinguished road
Here is what I posted over on Bimmerfest forum:


So it sounds like only happens when revving the engine? Like around 2K rpm?

The obvious thought is something to do with the serpentine belt, pulley bearing, or tensioner. To rule some portion of the serpentine belt in or out one would loosen the tensioner, remove the serpentine belt, have it carefully held out of the way while the engine is revved and see if the noise is still there. If it goes away, then I would replace belt, pulley, then tensioner in that order.

However, given this is an M57 diesel engine, I would be very suspicious of a broken or loose exhaust manifold stud with leakage of exhaust gas (and hence whistling/whining) at higher rpms. You can use a borescope to check for loose/missing studs/nuts. There are numerous examples of this on various forum postings. The most recent one was on this [sic - Bimmerfest] forum just a few weeks ago. You can read about it here. Be sure to read all the various links in the posting. Lot of good information there.

Of course, could be a bad turbo, alternator bearing, ac compressor, etc. But common things are common, and my money is on the exhaust manifold.

Good luck. Let us know what you find.
__________________
Stephen
2010 e70 35d- now driven by son #2
2005 e53 3.0 - now driven by son #1
2021 G05 45e PHEV - now driven by me
2008 ML320 CDI - driven by wife
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 05:47 PM.
vBulletin, Copyright 2024, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.