Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 08-08-2002, 11:38 AM
Registered User
Join Date: Nov 2000
Location: Ontario, Canada
Posts: 463
Unhappy Something is still loose

3 months ago, I had the timing chain cover taken off, cleaned and a new gasket installed and the tensioner shock replaced since I had the very common leaking everyone has heard about on the M103's.

I was wondering though, the loose noise I am hearing is the timing chain tensioner? It is a very hard sound to describe. It eminates from the front end of the car, it happens in 2nd and 3rd gear from around 1500-3000 rpm. It stops above that and there is no loss of power or anything like that.

Car also has passed it's emissions test with flying colours and I mean flying colours!!! It barely recorded any NOX's!!!!

My transmission cooler lines are corroded badly. I have ordered a new set of lines/trans filter kit/gasket for $214.50 CAN$

This noise is so very hard to describe. It is almost a very light ratcheting noise but very soft aswell.

Odometer reads 152 000kms as I write this...

Please offer anything you can guys!!!! thank you
190E 2.6 - 244 000 km
Reply With Quote
Old 08-08-2002, 01:27 PM
Registered User
Join Date: Nov 2000
Location: Ontario, Canada
Posts: 463
The closest thing I can describe it to is a kind of metallic stretching sound or like opening an old wooden door and the hinges have a deep pitched stretching sound.....

I am certain it must be either the timing chain tensioner or the shock (possibly out of spec? bad bushing?)

What do you guys suggest here?

Is there anything I could do to help determine the cause?

I do not have a scope but, have plenty of time on my hands after my co-op job....

Please advise.

Mike McKinney
190E 2.6 - 244 000 km
Reply With Quote
Old 08-09-2002, 01:45 AM
Registered User
Join Date: Apr 2000
Posts: 412
Check the shock on the serpintine belt tensioner. The bushings get hard and crack and it makes a ticking sound usuallt at idle but I wouldn't rule out other engine speeds or loads.
1990 190E 2.6
1996 Grand Voyager 3.3
1985 Mustang GT 5.0 5 SPD
1982 Suzuki GS 750T
Reply With Quote
Old 08-09-2002, 09:08 AM
Registered User
Join Date: Nov 2000
Location: Ontario, Canada
Posts: 463
The shock is new on the serpentine belt tensioner.

I believe the bushing is new also although I will check my service receipt to make sure.

I am thinking this noise could be something else in the serpentine belt pulley system? Are there shocks/tensioners to look at ???

I would think the timing chain tensioner would be louder and rougher than this sound I am hearing???

Much thanks for responding JDUB.

Any other tips for me??? I would really appreciate it.


Mike McKinney
190E 2.6 - 244 000 km
Reply With Quote
Old 08-10-2002, 10:23 AM
Registered User
Join Date: May 2001
Posts: 161
ck shock on belt tensioner--Again

Did a shop do the repair for you ?? If you paid for new shock and new tensioner then I would go back and insist that they re-work it and make it right. When correct this belt is "silent".

A think new shock would normally come with new bushings in it. Call Phil at partsshop and confirm that this is so. The sound you describe is a lot like I remember when I had a top bushing with some play in it. While idling carefully push (with pressure of 5 lbs or so) on the top bushing using a long handled tool --- If you can feel any movement or if the sound changes you can tell if the bushing is worn. I'm suspicous that they may have re-used parts. Is that a possiblity? If they re-used the tensioner it may be set up too tight. I shared my experience about re-using and setting tension on the tensioner in another post recently. Do a search for DanielW posts and it will come up.

Another possible is that an idler pully has a bad bearing and is about to go out, or a fan clutch bearing. Is there any noise from twirling the fan ?(With engine OFF, of course)

Good luck,

DanielW 89 300E
Reply With Quote


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 07:58 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page