OK update,I changed the tstat and no change. I have checked the defrost door, its working. I checked today and now one hose is getting hot and not the other. I had a few people tell me it might b a control valve in my heater hose and I have looked and have nothing in my heater hoses. any chance it might b somwhere else, dont know just asking. I am becoming frustratedwith this sucka. Everything seems to b working ok.