Question about Engine Mounts
Thread Starter
Junior Member
Joined: May 2009
Posts: 39
Likes: 1
E-240 2004
Question about Engine Mounts
Am having E-240 Model 2004
Last time i had checked the car with MB dealer he advised me to replace Engine Mounts as the engine begin makeing some vibrations.
I will get it replaced soon but i was just wondering what the worst can happened in case they has not been replaced ??
Last time i had checked the car with MB dealer he advised me to replace Engine Mounts as the engine begin makeing some vibrations.
I will get it replaced soon but i was just wondering what the worst can happened in case they has not been replaced ??
Super Member
Joined: Jun 2008
Posts: 855
Likes: 1
2010 C63
The worst is the mounts fail completely. The engine can hit the hood and dent it, and could also bang the oil pan into the lower crossbeam which would crack the oil pan open.
This has happened to me and friends in the AMG group.
This has happened to me and friends in the AMG group.
Last edited by mikekuriger; Jun 4, 2010 at 12:06 PM.
MBWorld Fanatic!
Joined: Oct 2007
Posts: 1,564
Likes: 19
From: SoCal
98 Brilliant Silver E320 Wagon
Not likely. The design of the motor mounts pretty much ensures that the engine will shake rather violently long before they fail catastrophically.
When the internal bladder in the MM fails that side of the engine drops about 1/2 to 1" and vibration is transmitted thru the chassis and felt in the steering wheel. Most of the mount is metal and maintains the connection.
There isn't much risk driving until you can get them replaced. Mostly the irritation of a rough idle while waiting at the light.
Dealers charge quite a bit for MM R/R. My local dealer charges $700 for an E-Class. You can buy the exact same MM (Lemmfoerder) for about $65 each. Your mounts are a little more expensive. About $90. But there is some hassle getting them in and out.
When the internal bladder in the MM fails that side of the engine drops about 1/2 to 1" and vibration is transmitted thru the chassis and felt in the steering wheel. Most of the mount is metal and maintains the connection.
There isn't much risk driving until you can get them replaced. Mostly the irritation of a rough idle while waiting at the light.
Dealers charge quite a bit for MM R/R. My local dealer charges $700 for an E-Class. You can buy the exact same MM (Lemmfoerder) for about $65 each. Your mounts are a little more expensive. About $90. But there is some hassle getting them in and out.
MBWorld Fanatic!
Joined: Mar 2006
Posts: 3,254
Likes: 15
From: Louisiana
03 E500 and Corvette
Not likely. The design of the motor mounts pretty much ensures that the engine will shake rather violently long before they fail catastrophically.
When the internal bladder in the MM fails that side of the engine drops about 1/2 to 1" and vibration is transmitted thru the chassis and felt in the steering wheel. Most of the mount is metal and maintains the connection.
There isn't much risk driving until you can get them replaced. Mostly the irritation of a rough idle while waiting at the light.
Dealers charge quite a bit for MM R/R. My local dealer charges $700 for an E-Class. You can buy the exact same MM (Lemmfoerder) for about $65 each. Your mounts are a little more expensive. About $90. But there is some hassle getting them in and out.
When the internal bladder in the MM fails that side of the engine drops about 1/2 to 1" and vibration is transmitted thru the chassis and felt in the steering wheel. Most of the mount is metal and maintains the connection.
There isn't much risk driving until you can get them replaced. Mostly the irritation of a rough idle while waiting at the light.
Dealers charge quite a bit for MM R/R. My local dealer charges $700 for an E-Class. You can buy the exact same MM (Lemmfoerder) for about $65 each. Your mounts are a little more expensive. About $90. But there is some hassle getting them in and out.
Super Member
Joined: Jun 2008
Posts: 855
Likes: 1
2010 C63
You both are incorrect. The motor mount on these cars is a hydraulic shock. When it fails, it can come apart completely and nothing is holding the motor in at that point. I had this condition on one of my mounts - when I went to jack the motor up the mount fell apart completely. Only my driver's side mount was still holding the motor in. My friends CLK55 had 2 completely bad mounts and his motor dented up his hood pretty badly.
Please do not discount the importance of changing these mounts!
Please do not discount the importance of changing these mounts!
Newbie
Joined: Jun 2009
Posts: 6
Likes: 0
e500
thanks for all the valuable info, can anybody suggest where i can buy engine mounts for e 500 2004. the dealer gave me quote of 1000 plus, but you mentioned that i can buy them for 90 dollars, wondering where can i buy them, thank you in advance, i appreciate your replies.
Out Of Control!!
Joined: Jul 2003
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From: North Scottsdale, AZ
'71 Pinto
Front left OEM part # 2112400517 (for comparison shopping, autohausaz.com $90.12 / parts.com OEM 100.05), right 2112403017 (74.55 / 98.90), and rear 2202400218 (17.39 / 31.05).
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Joined: Jul 2003
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From: North Scottsdale, AZ
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Joined: Jun 2009
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e500
Konigstiger,
dealer said that my secondary air pump is faulty, needs to be replaced with fuse and relay? i found bosch secondary air pump on e bay, but wondering about fuse and relay? anybody has any suggestion what kinda fuse and relay i have to buy for secondary air pump?
dealer said that my secondary air pump is faulty, needs to be replaced with fuse and relay? i found bosch secondary air pump on e bay, but wondering about fuse and relay? anybody has any suggestion what kinda fuse and relay i have to buy for secondary air pump?
