1997 Ford Expedition Q&A
1997 Ford Expedition Question: heater blows cold air what can I check so it will work
This is a blend door problem. This is above your ability. Seek out a repair shop for repair. - PARTS GUY
So, here's what I've done: (1) checked coolant level, (2) confirmed blend door is working perfectly, (3) confirmed that both inlet/output tubes to the heater core on the firewall are hot, (4) torn ...