A180 (2ltr cdi) whistle

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ilunn

Active Member
Joined
Apr 1, 2017
Messages
165
Location
Usually in Garage or Shed
Car
E CLASS CONVERTABLE + B CLASS,
Just found out that If I put car in manual mode I get whistle from engine as I change gear I'm thinking its turbo whistle. Any thoughts what would cause this It not apparent in auto but I'm probably getting the rev's higher.
 
Not sure if this is the same noise but we used to get a high pitched whine from our engine that turned out to be the aircon compressor, even with a brand new one fitted I can sometimes hear the same sound but at a much lower level these days. It was very noticeable below 20/30 mph but got lost amongst the rest of the engine noise after that. If you put the car in neutral and revved the engine the whine would increase in pitch along with the engine revs.

The noise used to irritate the hell out of me!...I've heard other W169s making the exact same sound, when I hear it I can tell the car is an A Class before I even see it.
 

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