I a, having a problem with the engine staying warm and the HVAC not blowing hot air. I have seen others with similar problems and i am fairly certain it is the Thermostat. I went looking for one and found out that ford made it into a housing that costs around $120 and i don't have that kind of money laying around. Was wondering if anyone had any suggestions. was considering a piece of cardboard across part of the radiator. What do you all think?