My 2.0T S-Tronic has just started behaving strangly when the car is trying to idle. I'm not sure if it's linked to the problem, but I had just given it a bit of welly in 2nd and third gear hitting the S-Tronic gear limiter both times, then I noticed when I came to a round about the engine wouldn't idle properly while waiting for a space in the traffic. I've no idea what I've done, but I'm away from home and have 150 mile trip to make this afternoon. The car seems to drive ok once going, but just won't idle properly! Any help appreciated? Chris p.s. car has just had a full service at Audi.