My car is starting to sound very different. I just had it tuned up about 200 miles ago and for teh first two days was very quiet and very responsive, now its running loud again, and a very rough idle like always. Also, the pulley on the far right of the engine when looking at it seems to be squeeking and is loose when you pull on it. My AC doesnt work so my friend seemed to be the problem. Ill load pictures up also. And when you rev up to about a grand, you hear a chingy, seems to sound like braclets clanging together, and then when you go past that it sounds normal. Also when its in D. My friend thinks this is the motor mount. btw my friend is a mechanic in training and has torn apart tons of cars and is rebuilding his a4 right now. My engine shakes alot and sometimes when cold shakes the whole car and the doors when open. What seems to be the problem?