heater blows cold air when turned on on 1996 Ford Explorer

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.

by in Muskegon, MI on December 06, 2010
1 answer
ANSWER by , December 06, 2010
There is a motor in the dash that controls the blend of hot and cold air. The temperature blend door actuator could be failing, causing the door to stick on "cold".