I've gotta '91 tt auto. Recently, i had the major 60k service(all belts,tensioners,plugs etc etc) done at a zed specialist garage. Since i've had the car back it runs like total crap!!!! i.e; idle is all over the place,when coming to a stop engine revs drop to the point where the engine nearly stalls but then picks up again,while slowly accelerating the engine will hesitate like its being held back,also there is now a knocking noise coming from the engine too which wasn't there before the service was done. Im really at a loose end at the mo,i expected to get my zed back running almost perfect as it was before but now i'm worried that these so called zx specialists have totally fooked my engine!! would be grateful if anyone could shed any light on what could be wrong with my lady and how to repair? cheers.