Humming sound when crusing ~70MPH ??
01-19-2007, 04:39 PM
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2005 E55
Humming sound when crusing ~70MPH ??
I noticed that my engine/transmission? is making a humming sound when cruising at 70MPH on the freeway. The engine is noticeable louder. It only happens when cruising at around 70MPH and goes away when I accelerate or decelerate. Is it normal 
Stock 05' with 15,000 miles on the clock.
Thanks.
Stock 05' with 15,000 miles on the clock.
Thanks.
01-19-2007, 05:17 PM
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'06 E55, '05 SLK55, a few others
It's the infamous "drone" that I *****ed to MB about and was uncermoniously "blown off". Right at 2200 RPM, my car does it pretty bad, and has since new. I'm getting the K-1 next week and resonator delete to change the RPM it happens. Hopefully it will come at a noticeably lower or higher RPM instead of the exact speed/RPM freeway traffic usually travels at. 
