Calling all ford and Lincoln Masters I have a problem with my AC in my Lincoln..

The blend door motor might be turning, but the plastic gears often strip in the actuator so the door does NOT actually move. Very common to need to replace the blend door actuator.

Low on gas.

Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

Air Temperature Control Blend Door Failure

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car.

This is commonly caused by a defective air temperature control blend door actuator or sticking blend door or in most cases both. This door is between the heater core and the AC evaporator cores and blends air from the hot and cold sources to give the desired outlet at at the dash registers. To replace the blend door requires the dash be removed from the truck so it is wise to have my guess confirmed by a Ford dealer. This is a common problem on the Ford Expedition and the Navigator model lines.

Blowing hot air when set to A/C is almost always a stuck blend door, dead blend door actuator, or a cracked or disconnected blend door actuator vacuum line. The blend door is inside the a/c ducting under the dash, but the actuator will be accessible outside the ducting.

Check the blend door and other actuators. May be disconnected.

the bummer is removing instrument panel. big job.

A/C Electronic Blend Door Actuator Removal

1. Disconnect battery ground cable (14301). Refer to Section 14-01 .
   

1. Remove instrument panel (04320). Refer to Section 01-12 .
   

1. Remove four A/C electronic blend door actuator retaining screws.
   

1. Remove A/C electronic blend door actuator.
   
   

Item Part Number Description 1 18471 Heater Air Plenum Chamber 2 42141-S8 Screw (4 Req'd) 3 — A/C Electronic Blend Door Actuator 4 — A/C Air Temperature Control Door Shaft (Part of 18471) 5 19D842 A/C Air Temperature Control Door