thanks for all the replies lads ,i wonder if a plastic cap has been left on the problems started 3 days after it was fitted ive had it back to vw and they dont know whats wrong with it i hope i get it sorted cos i love the car if i leave the heaters off the bottom hose starts to warm up i found another fault with it last night ,i went to adjust the drivers side mirror and both mirrors were moving could that have anything to do with it cheers bill