What else could cause heater to not work?

Asked by s22carrillo Nov 16, 2014 at 08:16 PM about the 2004 Lincoln Navigator Luxury 4WD

Question type: Maintenance & Repair

Heater blows cold air, I replace the thermostat, blend door actuator, and flushed coolant. What else would cause heater to blow cold air?

3 Answers
144,725

T_S_T answered 9 years ago

The blend door not flipping over to heat,remove the actuator and rotate by hand,it may just be stuck.

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144,725

T_S_T answered 9 years ago

You can use a quarter inch rachet to move the door,where the square prong go,s in to box.

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GuruBD5JW answered 5 years ago

Bought new heater core, replace it..... still no heater...still blowing out cold

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