Climate Control Problems 2009 3.0 Hdi

[turbovette350]

Hi guys, climate control works great around town but half an hour on a motorway although blower is working very little or no air reaches the cabin. It sound like it's blocked, I did replace the pollen filter which didn't help.

any ideas?

 

thanks paul

[paul.h]

Have a read of this topic http://www.citroen-owners-club.co.uk/citroen/topic/22766-air-blower-not-kicking-out-much-air/