A whirling thud sound at 40 to 60 mph??
Thread Starter
Almost a Member!
Joined: Mar 2003
Posts: 71
Likes: 0
From: Miami
'99 E430
A whirling thud sound at 40 to 60 mph??
At around 40 MPH I hear a deep rhythmic whirling thud sound. It's not my radio.
It's been that way for 2 yrs. I thought it was a bad alignment or bend rims. I had the car aligned & rims changed many months ago.
Could it be in the transmission?
The car handles fine & always checks out ok when in the shop for usual maintenance. I play music a lot so a usually don't hear it & I forget about it. How can I eliminate this sound?
It's been that way for 2 yrs. I thought it was a bad alignment or bend rims. I had the car aligned & rims changed many months ago.
Could it be in the transmission?
The car handles fine & always checks out ok when in the shop for usual maintenance. I play music a lot so a usually don't hear it & I forget about it. How can I eliminate this sound?
Member
Joined: Jan 2002
Posts: 133
Likes: 0
From: SF Bay Area
E430
If you can isolate the noise on one side of the car other the other, front or back, it may help to identify where the noise is coming from.
Going to pick up my E from the shop today after a R&R of a rear wheel bearing. I had a seized bearing and made a sort of clack clack sound.
Heard other cars with a bad bearing and made a different type noise, more like what you described.
good luck,
-travis
Going to pick up my E from the shop today after a R&R of a rear wheel bearing. I had a seized bearing and made a sort of clack clack sound.
Heard other cars with a bad bearing and made a different type noise, more like what you described.
good luck,
-travis
Thread Starter
Almost a Member!
Joined: Mar 2003
Posts: 71
Likes: 0
From: Miami
'99 E430
thanks for the info
I'm taking it to the shop on Thursday. Usually I don't hear the sound since I'm jamming in the car. Even with the radio off it's just sublte in the background, kind of hypnotic if you don't realize the sound is there.
Maybe I'm being picky?
Do you have a pic of your car. I'm thinking of getting the Eibach spings & shocks w/dampeners.
Maybe I'm being picky?
Do you have a pic of your car. I'm thinking of getting the Eibach spings & shocks w/dampeners.
Super Member
Joined: Dec 2004
Posts: 620
Likes: 1
From: TX
13 Lunar Blue GL550, 06 Imola Red BMW X5 4.8is, 04 Gold Honda Ody
Originally Posted by clco
I'm taking it to the shop on Thursday. Usually I don't hear the sound since I'm jamming in the car. Even with the radio off it's just sublte in the background, kind of hypnotic if you don't realize the sound is there.
Maybe I'm being picky?
Do you have a pic of your car. I'm thinking of getting the Eibach spings & shocks w/dampeners.
Maybe I'm being picky?
Do you have a pic of your car. I'm thinking of getting the Eibach spings & shocks w/dampeners.
Did you ever find out where the nosie was coming from?
Member
Joined: Jun 2005
Posts: 138
Likes: 2
From: Huntsville Alabama
'00 E430, '83 Porsche 928S
If the sound is present at different RPM's (speed dependent), I would check tires and possibly the flex discs on the drive shaft. If you can isolate to a corner of the car, it is probably a tire. If it feels like it is under uranus, than it could be a flex disc. I think there is two on a W210. I have not changed one yet, but I have heard they have a tendency to get soft over time. A slight sag in one could give you a resonating sound at a certain speed range.
Almost a Member!
Joined: Oct 2002
Posts: 47
Likes: 0
From: Santiago, Dominican Republic
E420 Sport
Is it harmonic?
Hi or low frequency?
Speed or RPM dependant?
On acceleration or deceleration?
Once you hear it, if you put the car in N: Is it still there?
Do you "feel" the noise?
Is your exhaust/muffler in good condition?
Depending on the answers could be, among other things:
Roller bearings
Flex discs
Differential mounts
Motor mounts
Trans mounts
Shaft balance or central bearing
Tires/wheels
Rotors
Exhaust hole
Hi or low frequency?
Speed or RPM dependant?
On acceleration or deceleration?
Once you hear it, if you put the car in N: Is it still there?
Do you "feel" the noise?
Is your exhaust/muffler in good condition?
Depending on the answers could be, among other things:
Roller bearings
Flex discs
Differential mounts
Motor mounts
Trans mounts
Shaft balance or central bearing
Tires/wheels
Rotors
Exhaust hole
