Hello, My timing belt, water pump, spark plugs, oil & filter, air filter were all replaced a month ago. The engine has not been running smoothly during idle and I can feel very very slight vibrations through the chassis during idle and when driving on smooth road when at 2500-3000 RPM (cruising speed). The recirc valve was (N249) was replaced because a fault code came up after getting my car back from the mechanic. There are no fault codes showing up so I cannot determine what is wrong and the mechanic says it runs and drives perfectly. I've had the car a year and was never aware of the engine running when stopped in traffic, but now it has caught my attention since getting it back from a major service. I'm in Sydney and would like to know if anyone would meet me with a similar car so I can feel how your car runs when idling. Mine is 2006 A3 Sportback, 8P, 2.0 TFSI Quattro 147kW model. Thanks in advance.