Whirring "Blender" Sound...2013 C300 4MATIC Sport
12-05-2020, 04:36 PM
#1
Junior Member
Thread Starter
Whirring "Blender" Sound...2013 C300 4MATIC Sport
Hey folks! So I am in the midst of my first week with my 2013 C300 4MATIC Sport and I've immediately noticed this whirring, blender-like sound, coming from what seems to be the front right/passenger area. The whirring sound goes along with the RPM's of the vehicle; I'd say it really becomes evident around 20 mph and the pitch increases from there. However, if you're driving with the radio on, you won't hear it.
I can post a sound clip if necessary but hoping my description can set off some light bulbs. :-) Thank you!
Lance
I can post a sound clip if necessary but hoping my description can set off some light bulbs. :-) Thank you!
Lance
12-05-2020, 09:35 PM
#2
Member
If bad enough that the bearings have actually started to break-down, could be the tensioner pulley, or one of the two idler pulleys. FCP Euro has them all at great prices.
Air injection pump could have gone really south, but it shouldn't be running all the time. And it will throw an error code/Check Engine Light
Air injection pump could have gone really south, but it shouldn't be running all the time. And it will throw an error code/Check Engine Light
