I got into an accident last week and my radiator support, radiator, ac condensor was damaged. I replaced everything and bought a brand new thermostat from toyota at the same time I put it all back together and bled the coolant maybe 5 times and I get no heat. My car gets to its operating temperature and stays there and does not overheat but I have no heat. The only thing I can think is wrong is I got a defective thermostat or maybe I put it in wrong. I put the spring side in towards the block. I do notice my lower radiator hose does get slightly hot. I believe one hose is supposed to stay cool but I forgot which. Can someone shed some light on this problem?