1999 Ford Explorer Q&A
1999 Ford Explorer Question: Heater blows cold air
Heater blows cold air and after 20 miles or so it will start getting warm. It then starts blowing cold again. It goes back and forth like this while running. - Visitor
Sounds like a classic thermostat issue. However, if the engine is hot enough, it could be a temperature blend issue inside the dash. - DaveJHM
Heater core is fine, it blows cold air, the air conditioner works fine. not sure what the problem is. it did work fine till yesterday when I tried to use it. the weather was good here for a few day...
heat was fine turned car off for a minute started it up no heat. blows cold air. can here it change from vent to defrost to floor but no heat.
When I turn the heat on I can hear faint knocking sounds coming from the dashboard. The heater only blows cold air. The air conditioner works fine. What could the problem be?
driving at 55 mph in 7 degree F. temperature my heater only blows cold air
when i turn heat on no heat just cold air