Hi All, I've just bought a 2000 Audi A3 1.6 which is in immaculate condition, but appears to need a tiny amount ofTLC. The main problems are as follows, Passenger window doesn't work at all - won't respond to the switches, The drivers window will go down, but then struggles to go up. It will go up with help. I understand this is a common problem with A3's, but can it be a DIY repair? The air recirculation switch (non-climate control) pushes in and pops back out again and doesn't appear to make any difference? Is it supposed to stay in once pressed or not? The car doesn't seem to fog up too badly, so maybe it's stuck on non-recirculate? The biggest problem is with the idle. It hovers between 800rpm and 1200rpm, and is quite lumpy, as though the car is accelerating by itself. If I put my foot on the accelerator, I can feel it pulsing, as though it's pushing itself down and returning back up? Is this a common problem, and what am I looking at? Sorry for the questions, but I've never owned an Audi before or experienced Audi dealers!