Heater blows only cool air even after water temp is up on 2001 Ford Expedition

had stat and core replaced, inside controls work. only one hose under hood is warm

by in Chambersburg, PA on February 25, 2014
1 answer
ANSWER by on February 25, 2014
If you don't have a water shut off valve, then you need to blow heater core out. Did you drain the heater hoses of debris before hooking to the new heater core.