E-Class (W211) 2003-2009

Engine mounts or tranmission mounts?

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Old Nov 26, 2013 | 03:54 PM
  #1  
dewana421's Avatar
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From: west palm beach USA
E320 2004 model Silver sedan
Engine mounts or tranmission mounts?

I will need your advise and help.
Recently i have experienced a few wierd issues with my car and all within 2 months period.

FIRST ISSUE:
The car started to hum when idle. If i stop at a red light i feel the car humming on and off. (hmmmm.....smooth....hmmmmm...smooth...)
dont know if this is due to spark plugs? or something electrical? it improved a little after i changed my engine oil.

SECOND ISSUE:
My car vibrates when i put it in gear and take off. more like when i am driving at a speed of 10-20mph i hear vibration on my dashboard and inside the car. once i catchup to normal speed it goes away.
dont know if issue one and issue 2 are due to the same problem.
dont know what the problem is...
could it be the engine mounts or transmission mount?

what is the difference in engine mount and transmission mount?
how can i tell the difference and identify what needs to be replaced. do both cause same vibration?

PLEASE HELP ME!
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Old Nov 27, 2013 | 09:18 AM
  #2  
dewana421's Avatar
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From: west palm beach USA
E320 2004 model Silver sedan
yes i did ask them but they said it will be a seperate diagnostic fee for each of the item. really????

yes i dont know how to troubleshoot this and thats why i was asking for help...everyone does something for the first time in their life before they become experts....im very knowledgible on most of the stuff in the vehicle and wanted to get some help troubleshooting this but i guess im at the wrong place..but hey thanks for the advise!!!! so kind of you!
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Old Nov 28, 2013 | 02:00 PM
  #3  
dewana421's Avatar
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From: west palm beach USA
E320 2004 model Silver sedan
and thats exactly what i did..you read my question one more time and you will know.i didn't ask how to do it but how to tell what is needed first..already searched but nothing tell me the difference.
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Old Nov 29, 2013 | 11:29 PM
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JP500's Avatar
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2003 E500 sport (sold), 2009 GL450, w213 E63 (waiting for ordering guide)
Man, Plutoe is a real helpful fella. We need more people like you to keep this planet a better place with people who aren't sarcastic and help out kindly. Cheers
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Old Nov 30, 2013 | 12:13 AM
  #5  
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From: Athens, GA USA
2011 E63, 2011 Hyundai Genesis 4.6 v8, 2013 GMC Denali XL, 1965 Ford Mustang, 2005 Merc. E500
Originally Posted by dewana421
I will need your advise and help.
Recently i have experienced a few wierd issues with my car and all within 2 months period.

FIRST ISSUE:
The car started to hum when idle. If i stop at a red light i feel the car humming on and off. (hmmmm.....smooth....hmmmmm...smooth...)
dont know if this is due to spark plugs? or something electrical? it improved a little after i changed my engine oil.

SECOND ISSUE:
My car vibrates when i put it in gear and take off. more like when i am driving at a speed of 10-20mph i hear vibration on my dashboard and inside the car. once i catchup to normal speed it goes away.
dont know if issue one and issue 2 are due to the same problem.
dont know what the problem is...
could it be the engine mounts or transmission mount?

what is the difference in engine mount and transmission mount?
how can i tell the difference and identify what needs to be replaced. do both cause same vibration?

PLEASE HELP ME!
Vibration between 10 and 20 mph during acceleration could be center driveshaft bearing and mount. Have the bearing and flex disc checked. If you have to replace the bearing then also replace the mount and two flex disc to save later on labor cost.

Last edited by homeofstone; Nov 30, 2013 at 12:15 AM.
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Old Dec 15, 2013 | 12:19 AM
  #6  
dewana421's Avatar
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From: west palm beach USA
E320 2004 model Silver sedan
Replaced my transmission mount and vibration went away.
I made a video and posted it. Hope it helps someone.
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