Mechanics

HEATER

2004 Mercury Mountaineer • 6 cylinder 4WD Automatic • 92,000 miles

My heater is blowing cold air. It has antifreeze in it
Avatar
Klewis37
February 21, 2011.



WIth the engine running, hot and the heater on, feel both heater core hoses. If both are hot, check the blend air door. If only one gets hot, flush the heater core. NOTE: The engine must be at operating temp for the heater to work properly.