Can Anyone Identify the source of this noise (video attached)
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Junior Member
Joined: Feb 2018
Posts: 26
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Corvette
Can Anyone Identify the source of this noise (video attached)
I have an appointment for service later this week - not sure if I should park the car up or continue driving. The noise is present during start up and goes away after about 15 minutes of driving. Its very loud and obnoxious - like a robotic whine (video here:https://www.reddit.com/r/mercedes_be...ideo_attached/)
Sounds like the front of the engine passenger side but unclear - No issues with drivability.
2011 E550 5.5 NA....
Sounds like the front of the engine passenger side but unclear - No issues with drivability.
2011 E550 5.5 NA....
Joined: Nov 2016
Posts: 7,847
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From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
It does sound like a bearing but could be the idler, water pump, or other pulley. Have you checked for movement in all your pulleys with the engine off?
Out Of Control!!
Joined: Apr 2019
Posts: 11,920
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From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
repairs around the corner....
this sounds like time to pop the hood for repairs plus overdue maintenance....
Last edited by CaliBenzDriver; Jul 15, 2024 at 10:12 PM.
MBWorld Fanatic!
Joined: Dec 2020
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From: 122W, 37N
2016 E350 4Matic wagon, 2019 Ford Expedition, 2019 Chevy Bolt EV
my Ford SUV was making an awful chirping rattling noise, constant regardless of RPM... really loud under the hood. Ford Ecoboost forum folks were saying all kinda scary stuff about cam phasers, turbos, etc....
turned out to be a little scrap of random metal that had gotten behind the water pump pulley. dealer took off the serpentine belt, started it, no noise. dealer spun the various pulleys, boom, water pump. pulled pulley, scrap fell out, no sign of where it came from, no damage, buttoned it back up, no more noise and no charge (ok, I have a CPO/ESP on this SUV).
turned out to be a little scrap of random metal that had gotten behind the water pump pulley. dealer took off the serpentine belt, started it, no noise. dealer spun the various pulleys, boom, water pump. pulled pulley, scrap fell out, no sign of where it came from, no damage, buttoned it back up, no more noise and no charge (ok, I have a CPO/ESP on this SUV).
