Low heat from a heater generally means low fluid 
(or air) in it. In really cold places it might mean a frozen line.
Either way it's generally the first warning of a problem I get.

Rob
becida@comcast.net

At  12/1/2011 01:58 PM,Gilles H Turmel wrote:
>Hi,
>I have an 89 Westy Syncro and getting very 
>little heat from the front heater. The rear 
>heater is OK. I’ve checked the operation of 
>the valve and everything looks good. I recently 
>took the power pack (engine and tranny) out of 
>the vehicle to fix a tranny problem. Could there 
>be air in the heater radiator? If yes, what’s 
>the best way to get rid of it? Or do I need a new rad?
>Best regards.
>Gilles Turmel