Well I think my time with a A3 might be short lived! Iv'e had a little bit of a bad Idle problem for a few weeks but put it down to a torn PCV System, old Plug's etc. I've been building a pile of part's to put on but hadn't got around to changing anything over yet but now they might not even get a chance of going on lol! So, the Car was working fine apart from the rough Idle with rev's bouncing. Just lately it had got abit worse with the Car sometimes cutting out when coming to a hardish stop or going into reverse. Then all of a sudden the Car has now died. I nipped out the other day & parked up as normal when I got home. A few hours later when I went to start the Car it fired up straight away, I let it sit & Idle for a minute as usual & noticed that the bouncing seemed quite bad. I went to drive the Car &....... nothing!! Foot to the Floor with no Rev's/ acceleration! After various starts all I've found out is that the Car has a life of it's own! It will always start but sometimes will run really bad, sometimes not 'too' bad, will let me rev now & again but mostly now there is no accelaration at all. I've pulled codes again & again but they will randomly change!?! I will mostly get: PO012 PO223 PO638 Also I get the EPC & Engine Management light on, I clear them but they soon come back! From hours of reading I've found out it could maybe be the Throttle Pedal, Throttle Body, Coil Pack's, Crank Sensor, Cam Sensor or a dreaded short in a O2 Sensor causing the ECU to blow something!!! Can anyone who knows these Engines in detail advise where to start as I haven't really got money to do the 'change each part for new until it's fixed' option & then end up having to buy another ECU!!!!!!