Engine vibraion, but different..
Thread Starter
Newbie
Joined: Aug 2019
Posts: 2
Likes: 1
w220 S350
Engine vibraion, but different..
Hi!
I have a problem with my w220 S350.
The engine is vibrating and making some noise in the cabin from 1500 to approx 4500rpm, on every gear and in neutral.
Ive changed the hydro clutch, and the harmonic ballancer. The result is absolutely no vib at iddle and between 3000 and 3500rpm, but the main vibrations are still present.
One very interresting observation - when i drive the car trough a bigger puddle, and the water splash enters the engine bay the car runs silky smooth for a few seconds till the water dryes out.
Im struggling wit this since approx one year and i have no clue what can it be, maybe the belt tensioner is faulty.. I dont know..
If u have some ideas please let me know, thanks!
I have a problem with my w220 S350.
The engine is vibrating and making some noise in the cabin from 1500 to approx 4500rpm, on every gear and in neutral.
Ive changed the hydro clutch, and the harmonic ballancer. The result is absolutely no vib at iddle and between 3000 and 3500rpm, but the main vibrations are still present.
One very interresting observation - when i drive the car trough a bigger puddle, and the water splash enters the engine bay the car runs silky smooth for a few seconds till the water dryes out.
Im struggling wit this since approx one year and i have no clue what can it be, maybe the belt tensioner is faulty.. I dont know..
If u have some ideas please let me know, thanks!
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Mercedes
Hi!
I have a problem with my w220 S350.
The engine is vibrating and making some noise in the cabin from 1500 to approx 4500rpm, on every gear and in neutral.
Ive changed the hydro clutch, and the harmonic ballancer. The result is absolutely no vib at iddle and between 3000 and 3500rpm, but the main vibrations are still present.
One very interresting observation - when i drive the car trough a bigger puddle, and the water splash enters the engine bay the car runs silky smooth for a few seconds till the water dryes out.
Im struggling wit this since approx one year and i have no clue what can it be, maybe the belt tensioner is faulty.. I dont know..
If u have some ideas please let me know, thanks!
I have a problem with my w220 S350.
The engine is vibrating and making some noise in the cabin from 1500 to approx 4500rpm, on every gear and in neutral.
Ive changed the hydro clutch, and the harmonic ballancer. The result is absolutely no vib at iddle and between 3000 and 3500rpm, but the main vibrations are still present.
One very interresting observation - when i drive the car trough a bigger puddle, and the water splash enters the engine bay the car runs silky smooth for a few seconds till the water dryes out.
Im struggling wit this since approx one year and i have no clue what can it be, maybe the belt tensioner is faulty.. I dont know..
If u have some ideas please let me know, thanks!
Thread Starter
Newbie
Joined: Aug 2019
Posts: 2
Likes: 1
w220 S350
I've changed the belt tensioner, installed a new belt and idler pulley - still the same.
My mechanic checked the engine, transmission and exhaust mounts - they are ok.
It's raining a lot today, and again, when i drive trough a deeper puddle the whole vibration stops - engine runs silky smooth.
My mechanic checked the engine, transmission and exhaust mounts - they are ok.
It's raining a lot today, and again, when i drive trough a deeper puddle the whole vibration stops - engine runs silky smooth.
Last edited by Kamil Puchala; Aug 13, 2019 at 09:04 AM.
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From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
It is pretty easy to slip the serpentine belt off of the pulleys, and it is safe to run the engine for a few minutes without the belt. Slip it off and run the engine up to where you normally feel the vibrations. If the engine is now smooth, the problem is with one of the belt-driven devices - alternator, power steering, AC compressor, water pump. If the vibration is still there, it is not in one of the belt-driven devices.
Senior Member
Joined: Aug 2019
Posts: 340
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From: Europe
09 SL500, 03 E320 CDI Wagon
I've changed the belt tensioner, installed a new belt and idler pulley - still the same.
My mechanic checked the engine, transmission and exhaust mounts - they are ok.
It's raining a lot today, and again, when i drive trough a deeper puddle the whole vibration stops - engine runs silky smooth.
My mechanic checked the engine, transmission and exhaust mounts - they are ok.
It's raining a lot today, and again, when i drive trough a deeper puddle the whole vibration stops - engine runs silky smooth.
You don't mention if the vibrations are same with hot and cold engine.
Driving through water, the water not only enters the engine bay but also cools down the entire exhaust. Being thin walled, it heats up again within a few seconds.
If the exhaust have "body" contact somewhere along it's path, it can make a lot of noise, sometimes difficult to point out.
A warm exhaust expands, a cold one retracts ( water ??)
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Senior Member
Joined: Aug 2019
Posts: 340
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From: Europe
09 SL500, 03 E320 CDI Wagon
It is pretty easy to slip the serpentine belt off of the pulleys, and it is safe to run the engine for a few minutes without the belt. Slip it off and run the engine up to where you normally feel the vibrations. If the engine is now smooth, the problem is with one of the belt-driven devices - alternator, power steering, AC compressor, water pump. If the vibration is still there, it is not in one of the belt-driven devices.
Good advise.
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2005 S500 Designo
I swear these cars have inexplicable vibrations built in from the factory.
Chased down the same issue. The trans mount cannot checked by eye, and will look good even though it has failed, but more likely than not it's a whole slew of problems adding up.
Engine mounts, harmonic balancer, trans mount, exhaust mounts, strut mounts, other suspension components, everything.
Chased down the same issue. The trans mount cannot checked by eye, and will look good even though it has failed, but more likely than not it's a whole slew of problems adding up.
Engine mounts, harmonic balancer, trans mount, exhaust mounts, strut mounts, other suspension components, everything.
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2005 S500 Designo
And like I said it could be all of these mixed together. These cars weren't designed/built properly
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w220 s500
Just thinking about my cars issue. It vibrates even in park. When not in gear and just revving to 2k and more, I get a vibration which can be felt next to my leg and through the floor. Does that narrow it down at all?
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2005 S500 Designo
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