stephenxchen

Can someone please tell me the PCV location on a 2007 A6 C6 3.2L 4F engine?
Would highly appreciate if you could include a diagram or picture.

Thanks so much!

A6Gary

It is located on the rear of the intake manifold, mounted slightly to the driver's side. It is Item No. 13 in this link: Online Audi A6/S6/Avant quattro spare parts catalogue, Europe market, 2007 model year: engine group, cover, ventilation for cylinder block subgroup, Audi VIN decoder, aftermarket, etka online.

stephenxchen

hi, thanks for the reply.

but I looked and looked and looked, I just don't see this round thing on the rear of intake manifold.

please let me know if #21 on this picture is the PCV?

https://www.realoem.com/cat_spares/e...6/448u/103250/

A6Gary

The "round thing" labeled "valve" in ETKA 7. If you follow the corrugated plastic hoses from the valve covers to the center of the intake, you will see this valve, which is P/N 06E-103-245-E for your 2007 A6. Item No 21 is buried deep under the upper intake manifold, which would make accessing this part very time consuming. I believe that item feeds into the upper engine ventilation that connects to the valve, which feeds the engine vapors back into the intake to be burned.

stephenxchen

hi, thanks for the reply and explanation, but I still can't find that Round Thing, so I took a couple of pictures. The corrugated plastic hoses go into rear of manifold.

raj99

Stephen,

Here's an image and you can see how both VC outputs merge into a Y fitting, then into a single inlet to the PCV box. The hose next to it with the flange at the other end of it is the one that enters the IM just behind the TB.

stephenxchen

thanks for the picture and reply........ my next question is..... how do I get to the PCV in order to replace it?

raj99

This might help

audi bug

PCV system changed in 2006 Model year:

https://www.ecstuning.com/Audi-C6_A6...Emissions/PCV/

The round pressure control valve at back side of engine doesn't exist anymore after 2006 vin # 192001.
It looks like it is integrated into oil separator (06E103547P) which means intake needs to come out to replace it.
What is the problem you are investigating?

stephenxchen

Thanks for the picture and reply.
Yeah, mine is 2007, so I believe mine is the newer integrated ....

My car has a high pitch whistle sound ONLY when car is fully warmed up and ONLY within first 3 miles of driving. Sound goes away after about 3 miles. I replaced belt tensioner and idler pulley, still have the whistle, and someone says it is the PCV to blame.