my heater won't work, I only get cold air on 2005 Mercury Mountaineer

my heater doesn't work , I only get cold air all the time. when i switch to hot air all I get is this clik, clik, clik behind the air controls

by in Peoria, AZ on January 27, 2011
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1 answer
ANSWER by , January 27, 2011
The clicking noise you are hearing is the blend door actuator trying to open the door. Most likely the motor will need replacement.