Hi There, I am new to this site and not sure if i have posted this in the right place. I have a 2003 audi a3 1.6se and have a fault which is showing the following symptoms: - Overly underpowered. - Not starting smoothly, and sometimes stalling while creeping in traffic etc - Cold air through air con despite turning the temp as high as 26! - Very rough drive with revs dropping sharply during gear change. - Alot of rev play during idle. - Fan at the front of the car would spin up extremely fast! I did take it to a friend who is a mechanic and he noticed the breather pipe was cracked and replaced it, and replaced the temp sensor, but the problem is still there, and the engine management light and esp light are on I noticed there was a post with the same thing but noone said what the problem was. Does anyone know? or will they please be able to help? Any comments would be greatly appreciated! Thanks!