R170 2K rpm vibration

**DesignoSLK** · 11-07-2006

Hey Dan!

I've noticed a vibration pretty much through out the car from 2000 to about 2300 rpms. Its sensed more at a stand still.

I drove a '98 SLK230 and it was a little more noticeable around 2500 rpms.

Is this indicative of the model/engine? It's definitely engine originated. It's not extremely annoying, but if there's something I can do about it, I'd like to.

**DansSlk** · 11-07-2006

Hi mate,

I have felt the same thing in one or two R170's but have never pin pointed it has it started just recently?

FPF422 · 11-07-2006

Could it be that something got a bit loose and that there is a resonance effect between those rpm ?

**DansSlk** · 11-07-2006

It could be yeah there's loads of things that could have the effect its just hard to pin point

FPF422 · 11-07-2006

Quote:

Originally Posted by DansSlk

It could be yeah there's loads of things that could have the effect its just hard to pin point

I don't think it's in the engine itself... the vibration would get worse and worse with the rpms... till breaking point.

My main suspect would be the heat shield (next to the exhaust manifold)....

**DesignoSLK** · 11-07-2006

I feel it at different speeds (mph), but always in the 2000-2300 range. Beyond that it's not there. I thought it might be tire related because before replacing them, it was a lot worse. But because the vibration was so bad before replacing the tires, once I replaced them, it was almost unnoticeable until this other guy pointed it out on his. (Nice run-on, huh?)

FPF422 · 11-07-2006

if it was the tires, it would be a certain speeds but not at a certain rpm range (and various speeds), IMHO

**DansSlk** · 11-07-2006

Well it does not have to be the innards of the engine to cause the noise it could be a pump or a belt causing the noise or any one of the components around the e-bay.

The thing with the tires is that if these provide a better ride then the vibration's needed to start this off / allow it to vibrate more could be reduced so the noise gets harder to spot.

Could be a heat shield but i would expect that to be related more to the road the car is driving on and temperature once the bay warms up the shield will tend to be jammed into place.

This is going to sound silly but have you tested this at idle with the hood open and having a listen around and where does it actually come from?

Could be the V-Belt could be the differential so if you could tell me where the noise is from that would help loads mate i don't wanna give advice based on what i have heard on other cars in case its a different noise so clarification would ease my mind a little that we are on the same page.

**DesignoSLK** · 11-07-2006

Quote:

Originally Posted by DansSlk

Well it does not have to be the innards of the engine to cause the noise it could be a pump or a belt causing the noise or any one of the components around the e-bay.

The thing with the tires is that if these provide a better ride then the vibration's needed to start this off / allow it to vibrate more could be reduced so the noise gets harder to spot.

Could be a heat shield but i would expect that to be related more to the road the car is driving on and temperature once the bay warms up the shield will tend to be jammed into place.

This is going to sound silly but have you tested this at idle with the hood open and having a listen around and where does it actually come from?

Could be the V-Belt could be the differential so if you could tell me where the noise is from that would help loads mate i don't wanna give advice based on what i have heard on other cars in case its a different noise so clarification would ease my mind a little that we are on the same page.

I can try it with the hood open. Just need to incorporate the wife. She hates doing car maintenance stuff with me...

Or maybe it's just me? ...nawaaaah

**DansSlk** · 11-07-2006

If you could try that would be great mate thanks.

Hopefully it will be possible to narrow it down to a corner of the bay or something.

11-07-2006	#1 (permalink)
DesignoSLK Professional TV Watcher Join Date: Sep 2006 Location: Kaiserslautern, Germany Vehicle: 2000 Designo SLK230 Posts: 1,716 Country: Thanks: 104 Thanked 25 Times in 20 Posts	R170 2K rpm vibration Hey Dan! I've noticed a vibration pretty much through out the car from 2000 to about 2300 rpms. Its sensed more at a stand still. I drove a '98 SLK230 and it was a little more noticeable around 2500 rpms. Is this indicative of the model/engine? It's definitely engine originated. It's not extremely annoying, but if there's something I can do about it, I'd like to. __________________ Kevin An American in Germany... To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. '00 SLK230 Designo copper, '06 Saturn Vue, Cessna 172 (pilot)

11-07-2006	#2 (permalink)
DansSlk Dude Join Date: Jun 2006 Location: Wales Vehicle: 05 B55S (Brabus 6.1 S) Posts: 6,801 Country: Thanks: 99 Thanked 236 Times in 180 Posts	Hi mate, I have felt the same thing in one or two R170's but have never pin pointed it has it started just recently? __________________ One thing you will learn with German cars - If it's simple it ain't happening.

11-07-2006	#4 (permalink)
DansSlk Dude Join Date: Jun 2006 Location: Wales Vehicle: 05 B55S (Brabus 6.1 S) Posts: 6,801 Country: Thanks: 99 Thanked 236 Times in 180 Posts	It could be yeah there's loads of things that could have the effect its just hard to pin point __________________ One thing you will learn with German cars - If it's simple it ain't happening.

11-07-2006	#6 (permalink)
DesignoSLK Professional TV Watcher Join Date: Sep 2006 Location: Kaiserslautern, Germany Vehicle: 2000 Designo SLK230 Posts: 1,716 Country: Thanks: 104 Thanked 25 Times in 20 Posts	I feel it at different speeds (mph), but always in the 2000-2300 range. Beyond that it's not there. I thought it might be tire related because before replacing them, it was a lot worse. But because the vibration was so bad before replacing the tires, once I replaced them, it was almost unnoticeable until this other guy pointed it out on his. (Nice run-on, huh?) __________________ Kevin An American in Germany... To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. '00 SLK230 Designo copper, '06 Saturn Vue, Cessna 172 (pilot)

11-07-2006	#8 (permalink)
DansSlk Dude Join Date: Jun 2006 Location: Wales Vehicle: 05 B55S (Brabus 6.1 S) Posts: 6,801 Country: Thanks: 99 Thanked 236 Times in 180 Posts	Well it does not have to be the innards of the engine to cause the noise it could be a pump or a belt causing the noise or any one of the components around the e-bay. The thing with the tires is that if these provide a better ride then the vibration's needed to start this off / allow it to vibrate more could be reduced so the noise gets harder to spot. Could be a heat shield but i would expect that to be related more to the road the car is driving on and temperature once the bay warms up the shield will tend to be jammed into place. This is going to sound silly but have you tested this at idle with the hood open and having a listen around and where does it actually come from? Could be the V-Belt could be the differential so if you could tell me where the noise is from that would help loads mate i don't wanna give advice based on what i have heard on other cars in case its a different noise so clarification would ease my mind a little that we are on the same page. __________________ One thing you will learn with German cars - If it's simple it ain't happening.

11-07-2006	#3 (permalink)
FPF422 Founding Member Join Date: Jun 2006 Location: Buizingen - Belgium Vehicle: '05 SLK 350 - 7G Posts: 852 Country: Thanks: 0 Thanked 0 Times in 0 Posts	Could it be that something got a bit loose and that there is a resonance effect between those rpm ?

11-07-2006	#7 (permalink)
FPF422 Founding Member Join Date: Jun 2006 Location: Buizingen - Belgium Vehicle: '05 SLK 350 - 7G Posts: 852 Country: Thanks: 0 Thanked 0 Times in 0 Posts	if it was the tires, it would be a certain speeds but not at a certain rpm range (and various speeds), IMHO

11-07-2006	#10 (permalink)
DansSlk Dude Join Date: Jun 2006 Location: Wales Vehicle: 05 B55S (Brabus 6.1 S) Posts: 6,801 Country: Thanks: 99 Thanked 236 Times in 180 Posts	If you could try that would be great mate thanks. Hopefully it will be possible to narrow it down to a corner of the bay or something. __________________ One thing you will learn with German cars - If it's simple it ain't happening.

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