my grandpa has a mechanic that used to have a ford tarsus and he had the same problem and 3 people brought in the same kind of car for the same problem. its just a common design flaw in this car he says. its pointless to fix but i want it to be fixed when its 10 degrees outside and i'm freezing in my car that won't warm up. it'll defrost my windows but it wont warm up the car. then again defrosting takes forever at 10 degrees.