Only cold air from driver's side and stalls when idling

Hi all,

I've just bought a 2007 C4 Grand Picasso and I'm loving it, apart for some issues.

First of it is an issue that I had in my previous cars (1998 Range Rover and 2000 Jeep Grand Cherokee) is that only cold air blows from the driver side (left). In my Range Rover the problem was in the blend motor in my my Jeep the problem was in the blend door. So I recon that the problem should be also one of these two in the Picasso. However I cannot find any schematics explaining how can I access those parts. Can you help me?

The other issue is that sometimes when the engine is idle it stalls...I have a Semi-automatic 6 speed gearbox. Any suggestions?

Thank you all for you time.

Best regards,

Nuno Rodrigues