Good afternoon, it's a pleasure to introduce myself !! .. I mention my problem: Mercedes c200 CGI (W204) "59000 Kms" ... When the engine is at normal temperature (85º / 90º) it appears as an intermittent blow when accelerating slowly when this was the vehicle (strange vibration in center console) that disappears or go increases the speed ..... It does not always ..... Turbo? escape? ..... Thank you !!