Engine mount question
 

Do both engine mounts go bad on the w124, or is it only the one on the passenger side due to heat?

thanks,

Depends. Any major shocks (accidents) in the cars history can also blow them. Otherwise its just age that does them in. Replacing them as a pair is always good bet.

true,

just trying to limit cost since i might be selling soon. but i am sure i need the passenger side one..

how do you test them?

thanks,,

Having someone rock the engine while you watch from below to see which mount is moving most?

John's advice is good. Even if one has failed more than the other, replacing that one will only stress the older one more. Replace them as a set if possible. Plus the smoother the car runs the easier it will be to sell. :D

Will replace them and update, it seems i need a transmission mount too !!!

The engine is supported by two engine mounts, one at each side and a third one at the rear on the transmission.

Engine mounts:
http://www.**********.com/search/product.aspx?sid=oedkhkjwk5qry445nqkh0v55&makeid=800016@Mercedes&modelid=1193958@300E&year=1993&cid= 20@Engine%20Parts,%20Seals%20%26%20Gaskets&gid=5552@Engine/Motor%20Mount

Transmission mount:
http://www.**********.com/search/product.aspx?sid=oedkhkjwk5qry445nqkh0v55&makeid=800016@Mercedes&modelid=1193958@300E&year=1993&cid= 33@Transmission/Transaxle%20System&gid=8616@Transmission%20Mount

thanks,

links are not working

Measure clearance to the crossmember, only way to tell.

Sorry I may have breached a peachparts protocol here in using a link offsite...

Actually, without even measuring, I have vibration in the cabin, and my car keeps on destroying the middle rubber exhaust hanger...the drive train is lower than it should be so i definitely need mounts. i will replace all of them including the transmission mount....

thanks,

No problem :)