Hello all, ill keep it short and sweet. I purchased my A3 2.0tdi sport (04) w/ 90k a few months back, has recently been idling dodgy for a few weeks, and just yesterday a terrible grinding noise started happening which I believe to be the starter motor (friend suggested perhaps a loose bearing). Is this a job I could do myself (not amazing with mechanics but i will give it a go if its a simple case of bolt on bolt off). And is the idling a seperate problem to that of the starter motor or are they related? Or is it best if I take it to an audi specialist and get it plugged in a diognosis machine? Thanks a lot for any help, much appreciated!