Humming noise when decelerating
Thread Starter
Super Member
Joined: Jun 2014
Posts: 609
Likes: 19
From: Ontario
2005 E55
Humming noise when off/on throttle
I can clearly hear the difference between just barely having my foot on gas (no noise) & when I take foot off a humming sound starts. Most noticeable about 50 to 70mph. It sounds like its coming from trans tunnel. Any thoughts?
Last edited by Hotsauce55; Apr 22, 2015 at 08:12 AM.
Thread Starter
Super Member
Joined: Jun 2014
Posts: 609
Likes: 19
From: Ontario
2005 E55
Further listening suggests:
Noise when accelerating (humming)
Noise when decelerating (louder humming)
No Noise when "just" on the gas a bit
No Noise in neutral while coasting
Noise when accelerating (humming)
Noise when decelerating (louder humming)
No Noise when "just" on the gas a bit
No Noise in neutral while coasting
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,486
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From: dmv
2009 E550 2000 Honda civic mash n' go
CENTER SUPPORT DRIVERSHAFT BEARING PROBABLY HAS EXCESSIVE PLAY. WHAT MILEAGE DO YOU HAVE ON YOUR VEHICLE? AND WHAT MAKE AND MODEL.........
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Thread Starter
Super Member
Joined: Jun 2014
Posts: 609
Likes: 19
From: Ontario
2005 E55
Nobody is willing to tear into the differential but they all believe it is definitely gear noise ie. Crown/pinion gear. I am trying to source a used e55 complete pumpkin to be installed.
It is not the csb unfortunately
It is not the csb unfortunately
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Junior Member
Joined: Dec 2013
Posts: 33
Likes: 0
From: Bay Area, CA
2003 e500
I have an '03 E500 and I get that same humming (higher pitched almost like a whistle) sound when I am between 70-75 mph. I slowly let off the gas and once I let off a few degrees, the humming goes away.
I was also curious as to what would be causing the sound.
I was also curious as to what would be causing the sound.
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,486
Likes: 46
From: dmv
2009 E550 2000 Honda civic mash n' go
Is this a humming or howling noise? There is a difference thats why i am asking. If its howling, probably your rear diff, humming i would like to think is a wheel bearing. However if you have those bull***** AS3's on your car they could as well be producing some noise....
Thread Starter
Super Member
Joined: Jun 2014
Posts: 609
Likes: 19
From: Ontario
2005 E55
Typically a wheel bearing will get worse with speed & will obviously become louder when loaded up more ie. shifting weight from one side of the car to the other. Don't discount what crmiv said as well, I am amazed at how noisy some tires can be. With that said, I find Michelin's to be one of the quietest brands.
If you cruise at 75mph & throw car into neutral does the noise go away? If noise, goes away then try increasing RPM to that 2,000-2,500 & see if noise comes back. Post up results
If you cruise at 75mph & throw car into neutral does the noise go away? If noise, goes away then try increasing RPM to that 2,000-2,500 & see if noise comes back. Post up results
MBWorld Fanatic!
Joined: Apr 2015
Posts: 1,486
Likes: 46
From: dmv
2009 E550 2000 Honda civic mash n' go
updated as3's
Typically a wheel bearing will get worse with speed & will obviously become louder when loaded up more ie. shifting weight from one side of the car to the other. Don't discount what crmiv said as well, I am amazed at how noisy some tires can be. With that said, I find Michelin's to be one of the quietest brands.
If you cruise at 75mph & throw car into neutral does the noise go away? If noise, goes away then try increasing RPM to that 2,000-2,500 & see if noise comes back. Post up results
If you cruise at 75mph & throw car into neutral does the noise go away? If noise, goes away then try increasing RPM to that 2,000-2,500 & see if noise comes back. Post up results
