RS4 Idle & Stall Issue... At My Whits End
 

Hey Guys, New here from Australia.

I've got a B7 RS4 which for the past 6 months has had a nasty idle & stall issue when it comes to a stop. Most times it will restart within the first few attempts but sometimes it won't at all for up to 5-10mins.

The worst part is it throws up no fault codes and even my mechanic has run out of ideas.

I've tried nearly everything to fix the problem...throttle body, fuel pump, fuel filter, PCV valve, engine speed sensor, MAF sensor

I'll take any suggestions at all, thanks guys