Hi the other day my 03' 2.0 FSI A4 starting quite violently shaking when i was parked idling, it only does it under 1000 rpm soon as i press the accelerator the vibration stops, just quite worrying when i stop at lights etc,etc. Also the day after waht i thought was the engine management light came on, however after consulting the handbook realised its the exhaust/emissions light. Havent had time to take it to the garage yet and done about 600 miles since i noticed it with no ill effects.... Anyone got any ideas as to what could be causing either of the problems? Id like to think theyre linked? Thanks in advance for any suggestions.