I have a 1989 535i and just recently within the past week I have noticed that it has been ideling very rougly and as I am sitting in the seat the whole car is shaking, its like sitting in an old truck. Also one day I was in a hurry and did not give it a chance to warmup a bit, put it in first and started off but noticed that the car had like short bursts of a tugging motion while going uphill. But once it is warmed up there is no more surging. It never used to do any of this and I am starting to get concerned. I have also noticed that as I am coming to a stop and downshift to second gear to slow down there is a loud clicking/ticking noise. Im feeling 2 different problems here but any idea about this?