humming sound
Thread Starter
Member
Joined: Mar 2004
Posts: 100
Likes: 0
From: Long Island
2005 Clk 500 Coupe
humming sound
i get this hummiung sound as i accelerate to and past 30mph...its like taking a plastic bottle and holding it out the window while uir driving like the wind makes it go hummmm..anyways does any one ahve any ideas?
Junior Member
Joined: Apr 2004
Posts: 36
Likes: 0
From: SoCal
1999 CLK 430
Can you determine a more specific location for where the sound is coming from? If you are hearing it from the engine compartment as opposed to the under carriage, this could indicate very different issues.
You might try removing the air box from the top of your engine and throttle the engine by hand while listening under the hood. This may eliminate concerns about bearing or vaccum problems in / or around you motor. From there just keep working your way to toward the back of the car while you or a friend revs the car to about 2500 rpm. This will get you through the exhaust system possibilites. If you still don't hear the noise, the the car will have to be "loaded" to produce it. In otherwords, the drivetrain must be under torque conditions with the drive wheels distributing the torque to the road. If you get to this point, you could be looking at $$$ fix. Try and rule out the simple stuff first....good luck.
You might try removing the air box from the top of your engine and throttle the engine by hand while listening under the hood. This may eliminate concerns about bearing or vaccum problems in / or around you motor. From there just keep working your way to toward the back of the car while you or a friend revs the car to about 2500 rpm. This will get you through the exhaust system possibilites. If you still don't hear the noise, the the car will have to be "loaded" to produce it. In otherwords, the drivetrain must be under torque conditions with the drive wheels distributing the torque to the road. If you get to this point, you could be looking at $$$ fix. Try and rule out the simple stuff first....good luck.
Junior Member
Joined: Apr 2004
Posts: 36
Likes: 0
From: SoCal
1999 CLK 430
P.S. clkal coud be right on the money...it could be a tire issue. Check for abnormal wear patterns on the fronts first, especially the inner tread to side wall. CLK's are not great at holding their alignment and the abnormal wear will create some annoying sound.
Thread Starter
Member
Joined: Mar 2004
Posts: 100
Likes: 0
From: Long Island
2005 Clk 500 Coupe
they arnet the tires.. its comming from the engine compartment.. but i have a feeling it might be the exhaust...and i only hear it when im drivning at around 30mph...
Junior Member
Joined: Jun 2012
Posts: 21
Likes: 3
From: Kingston Jamaica
1999 CLK 230K
hi my friend.. i know this thread is very old but i'm hoping you could help me. The sound you were hearing at around 30 mph. (a kind of rotational humming sound, wow wow hum hum sound). Did you ever get it fixed? if so please tell me how...i would really appreciate it as i am having he same problem with my w208 230k...PLEASE HELP me!!!! any input will be appreciated.
