2008 328i (6-speed) - Idle RPS fluctuate slightly accompanied by a vibration that feels like a pulse. Idle vibration remains even when the RPMS are stable. Engine runs good while driving. No
Problems and Recalls: BMW E90 3-Series Sedan (2005-11)
RPM Rough Idle, Vibrating & Shaking Problem BMW 5 Series 3 Series E90 E39 528I 328I M5 M3 - YouTube