Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

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

LinkBack Thread Tools Display Modes
Old 08-01-2003, 03:58 AM
otto huber's Avatar
Registered User
Join Date: Aug 2003
Location: Alameda California
Posts: 925
My 240D is shaking, and I can't find the cause.

Between the speeds of 28 and 32 mph the front of my '79 240D shakes pretty bad. I rotated and balanced the wheels, checked wheel bearings for excessive play, replaced both flex discs and center bearing on the drive shaft. The car drives pretty straight, and rides smoothly at all other speeds all the way up to 75 mph.
One other odd thing is that I some times get the same shake when the car is going about 10 mph with the brake on, but it brakes smoothly at higher speeds, so I think the rotors are fine.
The shake also occurs while the car is coasting in neutral. Any ideas? Thanks,


Last edited by otto huber; 08-01-2003 at 04:36 AM.
Reply With Quote
Old 08-01-2003, 11:26 AM
Posts: n/a
The only SOURCE of vibrations are ROTATING components, almost always wheel/tires or driveshaft. Vibrations are AGGRAVATED by loose suspension or more commonly steering linkage components.

That said, you have a vibration ONLY at a specific speed (frequency) so it could be a static component such as steering linkage, etc. If the vibration is driveshaft speed rather than wheel speed, it could be a loose carrier bearing or other driveshaft related component.

Since more than 90% of vibration problems on cars are wheel/tire related, you need to ENSURE that the wheels are balanced CORRECTLY. It is all too common for the tire store kids to put wheel weights ONLY on the inboard lip of the wheel saying that customers complain about the ugly weights being seen on their alloy wheels.

It is possible to get lucky with weights only on the inboard, but rare. On all modern cars the suspensions are nimble and REQUIRE dynamically balanced wheels, meaning weights both inboard and out. I have gotten so frustrated with the tire stores that I bought my own Coats computer balancer so I could balance them correctly without having a fight with the tire store kid every time.

Good luck,
Reply With Quote
Old 08-01-2003, 12:05 PM
haasman's Avatar
Registered User
Join Date: Jun 2001
Location: San Francisco, CA
Posts: 3,097

Do you feel it in the steering wheel more than any other place?

Check your steering dampener and also steering links, such as tie rod ends.

'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)
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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 12:02 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page