I attribute this to the overflow bottle sucking out the coolant and spitting it out. There are no leaks anywhere with the cooling system either. Heater is not working. A few weeks ago, it was working fine. Now when I turn the temperature dial from cold to hot it remains cold.
Nothing is wrong with the heater core, no leaks of any kind.
Heater hose gets hot to the touch. I believe this is a vacuum or elec. You may be experiencing problems with the motor that controls the blend door. We are sorry but to further answer your question, we would have to spend an inordinate amount of time explaining how to do what you asked, which we do not have considering the thousands of questions we get each week. Just click the hyperlink above and then click on your make of vehicle below the books displayed.