Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 10-02-2012, 10:44 AM
godschariot godschariot is offline
Registered User
Location: Vancouver
 
Join Date: Jun 2012
Posts: 46
Mein Auto: 325is
no idlery pulley?

I have a 95 325is with m50tu. It makes a "chirping" sound when idling or accelerating at low rpms, especially when cold. Replaced both belt tensioner pulleys and belts this weekend with no change. I noticed when doing it that I have no idler pulley on my car. I'm pretty sure I have a mechanical tensioner like this:

not my car, found this on an e30 forum i'm on (this m50 is in an e30). he has an idler pulley mounted up.


according to realoem this style of tensioner (which is different than the hydraulic shock type also found on 95 m50s) does not use an idler/deflection pulley?

http://www.realoem.com/bmw/showparts...47&hg=11&fg=18

http://www.realoem.com/bmw/showparts...99&hg=11&fg=18

Is this normal?
Reply With Quote
Ads by Google
  #2  
Old 10-02-2012, 11:40 AM
godschariot godschariot is offline
Registered User
Location: Vancouver
 
Join Date: Jun 2012
Posts: 46
Mein Auto: 325is
ok looks like the mechanical tensioner on pre-1995 cars DID use an idler pulley. So it looks like my set up is as it should be.


http://www.realoem.com/bmw/showparts...11&fg=18&hl=42
Reply With Quote
  #3  
Old 10-03-2012, 02:42 PM
superwashcycle superwashcycle is offline
DIY lifestyle.
Location: Irvine
 
Join Date: Aug 2012
Posts: 56
Mein Auto: 2003 530i Sport Premium
Does it sound like crickets? You may want to try regreasing or replacing your pulleys. If you have the engine out like that, it's really easy to do. I have the same thing happening in my E39 and it really only chirps at the lower RPMs in drive or reverse.
Reply With Quote
  #4  
Old 10-03-2012, 03:15 PM
godschariot godschariot is offline
Registered User
Location: Vancouver
 
Join Date: Jun 2012
Posts: 46
Mein Auto: 325is
yes same symptoms as you. did yiu read my post? thats not my engine and i replaced both tensioner pulleys already. i think my mechanical tensioner itself is suspect. i think i may buy a mechanics stethoscope and try to further diagnose it even though the tensioner is only $40.
Reply With Quote
  #5  
Old 10-03-2012, 04:36 PM
superwashcycle superwashcycle is offline
DIY lifestyle.
Location: Irvine
 
Join Date: Aug 2012
Posts: 56
Mein Auto: 2003 530i Sport Premium
Quote:
Originally Posted by godschariot View Post
yes same symptoms as you. did yiu read my post? thats not my engine and i replaced both tensioner pulleys already. i think my mechanical tensioner itself is suspect. i think i may buy a mechanics stethoscope and try to further diagnose it even though the tensioner is only $40.
My apologies - I have quality control issues regarding my replies when a professor is trying to teach me algorithm design and I'm here trying to find resources on greasing pulleys.

If you search "re-grease 3 belt pulley bmw," you should land at a link that has descriptive pictures of all the parts connected to the belts. I bought some wheel bearing grease from O'Reilly's and I'm going to attempt to perform the "regrease" tonight.

Have you considered just greasing all of the pulleys? Once you remove the fan shroud, everything's there and really quite easy to remove and inspect. There's a good DIY on removing the shroud from Beisan Systems. Once you find a pulley that has bearings with play in it, you've isolated one of the culprits. From what I've read over the last several days, this symptom seems to be caused by the idler pulley. Other symptoms I've read about are constant and include noise in any gear - my car doesn't make a noise when it's in park or neutral, so hopefully that's the case.

Last edited by superwashcycle; 10-03-2012 at 04:37 PM. Reason: oops, I have more to say!
Reply With Quote
  #6  
Old 10-03-2012, 04:44 PM
godschariot godschariot is offline
Registered User
Location: Vancouver
 
Join Date: Jun 2012
Posts: 46
Mein Auto: 325is
once again... i've replaced both pulleys. my car doesn't use the third idler pulley found on most other versions of these engines therefore i don't have one...
Reply With Quote
  #7  
Old 10-03-2012, 04:48 PM
superwashcycle superwashcycle is offline
DIY lifestyle.
Location: Irvine
 
Join Date: Aug 2012
Posts: 56
Mein Auto: 2003 530i Sport Premium
Well, I think the alternator bearing can also cause this noise?
Reply With Quote
  #8  
Old 10-03-2012, 05:12 PM
godschariot godschariot is offline
Registered User
Location: Vancouver
 
Join Date: Jun 2012
Posts: 46
Mein Auto: 325is
i'll report back if i make any findings!
Reply With Quote
  #9  
Old 10-03-2012, 10:15 PM
godschariot godschariot is offline
Registered User
Location: Vancouver
 
Join Date: Jun 2012
Posts: 46
Mein Auto: 325is
So i bought a mechanic's stethoscope and placed the rod on the tensioner with the engine running. there is a pretty loud noise coming from the assembly, like something banging around inside (no its not my vanos lol). anybody know what one of these things look inside and what could be broken?
Reply With Quote
  #10  
Old 10-04-2012, 10:24 AM
bmw-mania bmw-mania is offline
Officially Welcomed to the 'Fest
Location: California
 
Join Date: Feb 2011
Posts: 1,309
Mein Auto: BMW
Quote:
Originally Posted by godschariot View Post
So i bought a mechanic's stethoscope and placed the rod on the tensioner with the engine running. there is a pretty loud noise coming from the assembly, like something banging around inside (no its not my vanos lol). anybody know what one of these things look inside and what could be broken?
Maybe...

YOU SHOULD CHECK, INSPECT, REPLACE THE TENSIONER.
__________________
Quote:
Originally Posted by cj.surr View Post
I don't have to read the username on these posts to know who wrote it.

Bmw-Mania, Ladies and Gentlemen.
Reply With Quote
  #11  
Old 10-04-2012, 10:33 AM
godschariot godschariot is offline
Registered User
Location: Vancouver
 
Join Date: Jun 2012
Posts: 46
Mein Auto: 325is
Quote:
Originally Posted by bmw-mania View Post
Maybe...

YOU SHOULD CHECK, INSPECT, REPLACE THE TENSIONER.
lol... im just trying to proceed carefully, in the past ive thrown parts at problems before and it just ended up being misdiagnosis. doing research it seems like this is not a very common problem.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)
Today's Posts Search
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 On



Forum Jump


All times are GMT -7. The time now is 12:46 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms