1998 Ford E250 heater blowing cold air A couple of months ago I turned on the air conditioner and it blew hot air . The heater worked fine at that time. I didn't use the heater or air conditioner for a couple of weeks after that incident, when I did try to use the heater it blew cold air , and the air conditioner started to work. Since then the problem has been that the heater blows cold air, but the air conditioner works , and it has been that way for a month and a half. Today I replaced the hearter air conditioner switch module and it didnt solve the problem, as before I replaced it , the heater blows cold air and the air conditioner works.Anybody have an idea what's wrong? |