Odd vibration
Thread Starter
Senior Member
Joined: Oct 2006
Posts: 258
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From: Des Plaines, IL
C32 AMG
Odd vibration
First off all, HAPPY NEW YEAR EVERYBODY.
Back to a problem:
Left car parked for 5 days. This morning driving I noticed weird vibration.
only happens at 2-3000 rpms 2nd gear moderate accel.
It feels like car hasitates for split of a second , like series of 20-30 tranny jerks in 5 second, top it off with grinding noise comming from rear center of the car. It does not happen when going at full throthle.
Any ideas?
thank you in advance
Jack
Back to a problem:
Left car parked for 5 days. This morning driving I noticed weird vibration.
only happens at 2-3000 rpms 2nd gear moderate accel.
It feels like car hasitates for split of a second , like series of 20-30 tranny jerks in 5 second, top it off with grinding noise comming from rear center of the car. It does not happen when going at full throthle.
Any ideas?
thank you in advance
Jack
Thread Starter
Senior Member
Joined: Oct 2006
Posts: 258
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From: Des Plaines, IL
C32 AMG
Just turned 50k
No CEL, nothing
Thinking it might be differential or loose drive shaft, but it does not add up at all, when past 3000 rpms all goes away.
Regards
Jack
No CEL, nothing
Thinking it might be differential or loose drive shaft, but it does not add up at all, when past 3000 rpms all goes away.
Regards
Jack
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From: Chicago
2025 AMG E 53; 2018 GLC300 4Matic; 2003 360 Modena
I don't recall the rpm's being affected. The problem has always gone away in less than 5 miles. Unless the tire develops dry-rot, I don't believe that a flat spot from sitting too long will take a permanent set in a modern tire.
Thread Starter
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From: Des Plaines, IL
C32 AMG
Unfortunately tires are good no flat spots. I took it to my shop, inspected tires - good. On the way i did get message no ESP Available visit workshop.
I did ECU reset fault went away- hope for good - did test drive aprox 40 miles, no problem. Vibration still there. Inspected differential for any leaks, nothing that would raise a red flag, next I need to find the way to check tranny for any fluid loss.
I did ECU reset fault went away- hope for good - did test drive aprox 40 miles, no problem. Vibration still there. Inspected differential for any leaks, nothing that would raise a red flag, next I need to find the way to check tranny for any fluid loss.
Thread Starter
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Joined: Oct 2006
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From: Des Plaines, IL
C32 AMG
Thread Starter
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Joined: Oct 2006
Posts: 258
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From: Des Plaines, IL
C32 AMG
After reset ESP error disapeared.
Regards
Jack
Thread Starter
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From: Des Plaines, IL
C32 AMG
Thats what I'm thinking, but from my expierience bad diff would cause more vibration at higher speeds. If time permits and weather (it's 7F today) I will try to change differential oil, and check for glycol contamination.
Strangely the vibration did happen only once today on my 10 mile commute to work. And again it lasted for 5-6 seconds between 2000 and 3000 rpms. under moderate accelaration.
Regards
Jack
Strangely the vibration did happen only once today on my 10 mile commute to work. And again it lasted for 5-6 seconds between 2000 and 3000 rpms. under moderate accelaration.
Regards
Jack
Thread Starter
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Joined: Oct 2006
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From: Des Plaines, IL
C32 AMG
Thread Starter
Senior Member
Joined: Oct 2006
Posts: 258
Likes: 0
From: Des Plaines, IL
C32 AMG
OK I just did ECU reset by disconnecting battery, just to clear all fault codes.
As soon as i started the car NO ESP message apeared, drove her around the block message vanished. Car is back to normal for now. Except the damn vibration.
Regards
Jack
As soon as i started the car NO ESP message apeared, drove her around the block message vanished. Car is back to normal for now. Except the damn vibration.
Regards
Jack
Thread Starter
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Joined: Oct 2006
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From: Des Plaines, IL
C32 AMG
Update
After driving for aprox. 100 miles ESP is working fine.
Vibration steel exists.
Ideas:
1. Engine mounts
2. Transmission mounts
3. Glycol contamination or low transmission fluid-leak
4. Differential going bad
Anything missing?
Any help greatly apriciated.
Regards
Jack
Vibration steel exists.
Ideas:
1. Engine mounts
2. Transmission mounts
3. Glycol contamination or low transmission fluid-leak
4. Differential going bad
Anything missing?
Any help greatly apriciated.
Regards
Jack
Thread Starter
Senior Member
Joined: Oct 2006
Posts: 258
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From: Des Plaines, IL
C32 AMG
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E63 P30, CL500 Sport
I guess all you can do is try to eliminate each possibility on your list and hope that one of them fixes it. Otherwise, it is dealer time.
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From: NY
MB C32 AMG
Jackel, you need to drive the car at least 300-400 miles after you disconnect the car battery for any errors to come up. It takes the ECU that much time to fully come back up.
Thread Starter
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Joined: Oct 2006
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From: Des Plaines, IL
C32 AMG
Yes I know that. Just crossing my fingers.
Also I should've mention that even thou message says ESP Unavailable, it still works. In those 100 miles I intentionally tripped ESP probably 50 times or more.
Well for now it seems to work fine.
Now I'm more worried about the vibration.
I'm planing on replacing engine mounts, swaybar bushings and links while changing oil and spark plugs tomorrow.
Hope that helps.
Regards
Jack
Also I should've mention that even thou message says ESP Unavailable, it still works. In those 100 miles I intentionally tripped ESP probably 50 times or more.
Well for now it seems to work fine.
Now I'm more worried about the vibration.
I'm planing on replacing engine mounts, swaybar bushings and links while changing oil and spark plugs tomorrow.
Hope that helps.
Regards
Jack
Last edited by jacek9478; Jan 4, 2008 at 05:16 PM.
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From: Diamond Bar, CA
W206 PHEV AMG
are you getting rough idles at stops? bad engine mount shouldn't cause the vibration to be that much.
I would really starting to suspect it is the glycol contamination. given your car year and the cold weather could cause the valeo to leak.
I would really starting to suspect it is the glycol contamination. given your car year and the cold weather could cause the valeo to leak.
