Saab Forums - Saab Enthusiast Forum - new member but having trouble already

hi everyone , new member from england, ive got trouble with searching for an answer , the site never seems to find anything related to my problem with my 9000, manual acc , i cant get any cabin heat , all the pipes are red hot , plenty of coolant in tank, ive had heater matrix out and it seems to flow ok , ive tested thermostat seems to open and close , ive disconnected the acc because that wasnt gassedup anyway ,so basically it is just a manual heat with 4 speed blower . is there a secret sensor hidden somewhere if there is i cant find itandi cant get any damn heat and even in the south of england we do get it cold over here sometimes . please help me with my search problem and if you can solve the heat problem as well it would be even better ,
cheers Dave