EGR and PCV on 3.0 petrol ASN engine.

[niftyandy]

Hi

I drive a 2004 petrol 3.0 V6 (code ASN).....

Wondering if these have either an EGR (Exhaust Gas Recirculation ) and/or a PSV (positive crankcase ventilation) valve?

If so can someone tell me where they are and if they are easy to get to and clean?
Got a slightly uneven idle, wondering if these would sort things out.
Cheers for info guys
Andy