2001 Ford Expedition Q&A

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

had stat and core replaced, inside controls work. only one hose under hood is warm -
Answer 1
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. -