I believe that's what I need according to Audi's diagnostic. I've had my tt for not even a year and I've had the cel 5 times already. Everytime it's been cylinder misfiring codes and the coil pack was replaced by dealer under warranty. Now it expired and my last cel was P0301, P0302, P0303 and P0171 (system running lean). The dealer service said the vacuum supply line to crankcase vent needs replacing. I've been searching online but can't seem to find it. Can someone help? I assume it's a straight swap but I don't know where this hose is located either. Audi wanted to charge me $90 for the part and 2 hours of labor at about $350. Any help would be greatly appreciated.

 

www.vagkat.com
It's free so go ahead and sign up for an account.

Also purchase a Bentley Repair Manual. It's paid for itself since I've had mine... No lie!
http://www.bentleypublishers.com/audi/tt/2000-2006/

 

if you are going to give someone a website, you may want to type it right. www.vagcat.com

The crankcase breather system is all here

 

Thanks alot, i registered. I can't find that diagram. The diagram i found was the vacuum system and it looks different. So the vacuum supply line to crankcase can be any one of those hoses?

 

there is no vac line to the crankcase. Its the pcv or breather system. It removes excess pressure from the head and block. Any one of those rubber lines can go bad and make life difficult