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Discussion Starter · #1 ·
Hi guys! I have w220 s320 99 with 228k km. I have noise & vibration that starts in 1000 rpm . angine mounts are new, transmision mount is new,even when i am not driving, in neutral.
Catalytic converter have been replaced with not original part 4 months ago, but noise came only recently.
I would like to make my car noiseless again.
Any suggestions?
 

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08 ml320 cdi,slk 230,01 boxster S,04carrera911, 99 S320,67 GT350mustang,02G500L,96 s600 w140, e55 2k
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what part of the car do you hear it from?
 

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Discussion Starter · #4 ·
I hear it from the angine. It's sounds like hummmmmmmmmm. It's worse when i start the angine when it's cold, when The angine is in 1000-1200 rpm. It's hummmms in idle and in driving. It's also louder when idle in 2000 rpm.
 

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2000 S430 156k (11/12)
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Look at crankshaft (vibration absorber)pulley, there is a rubber section between the outer and the inner metal ring close to where the drive belt runs. If the rubber lining is protruding out more than 4mm and you see a damage to the rubber, it needs to be replaced.

If you also have the part numbers 1120350000 and 1120350600 on the pulley itself and if the protrusion and/or breakout on the rubber lining are measurable, it needs to be replaced with the new version of the pulley.
If you have this condition, call your dealer and see if they would do the repairs free of charge.
 

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Discussion Starter · #6 ·
Thank you all! I fix it. It was the transsmision mount. I change it under warranty after 11 months. At last quite & smooth again.
 

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2000 S430 156k (11/12)
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Ahh great. Your original post mentioned that the transmission mount was new, I guess it was replaced with one that was made in China or India..
Always use original or quality parts, I am glad it worked out for you.
 
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