FLOOR HEAT INOP DOOR BROKEN

Temperature Blend Door Actuator - RH, EATC Removal and Installation

1. Remove the RH floor console finish panel.

1. Lower the glove compartment.

1. Disconnect the RH temperature blend door actuator electrical connector.
2. Remove the 3 RH temperature blend door actuator screws.
1. Remove the RH temperature blend door actuator.

2006 2010 Ford Explorer NO Heat Passenger Temp Actuator Replacement same as mountaineer

Right side or left ? Electronic Automatic Temperature Control or manual ? Temperature or mode door ?
Temperature Blend Door Actuator - LH Removal and Installation
NOTE: It is not required to install the new LH temperature blend door linkage parts included in the LH temperature blend door actuator service part kit if only the temperature blend door actuator requires replacement and the linkage parts are not broken or binding.
LH temperature blend door actuator and linkage

1. Remove the 2 lower steering column opening cover bolts.

1. Detach the lower steering column opening cover.

1. Disconnect the in-vehicle temperature sensor aspirator hose and electrical connector.

1. Position the instrument panel wire harness away from the LH temperature blend door actuator.

1. Remove the 3 LH temperature blend door actuator screws.

1. Disconnect the LH temperature blend door actuator electrical connector.

1. Remove the LH temperature blend door actuator.

1. Manually operate, and inspect the LH temperature blend door linkage for incorrect placement, binding or damage.

Temperature Blend Door Actuator - RH, Dual-Zone EATC Removal and Installation
NOTE: It is not required to install the new RH temperature blend door linkage parts included in the RH temperature blend door actuator service part kit if only the temperature blend door actuator requires replacement and the linkage parts are not broken or binding.
RH temperature blend door actuator and linkage

1. Disconnect the glove compartment damper from the glove compartment.

1. Remove the glove compartment.

1. Remove the RH lower instrument panel insulator.

1. Remove the RH lower floor console trim panel.

1. Remove the 3 RH temperature blend door actuator screws.

1. Disconnect the RH temperature blend door actuator electrical connector.

1. Remove the RH temperature blend door actuator.

1. Manually operate, and inspect the RH temperature blend door linkage for incorrect placement, binding or damage.
2. Mode Door Actuator - Defrost/Panel/Floor Door
3. Removal and Installation
   NOTE: The defrost/panel/floor mode door actuator can be accessed from below the driver side of the instrument panel.
   NOTE: It is not required to install the new defrost/panel/floor mode door linkage parts included in the defrost/panel/floor mode door actuator service part kit if only the mode door actuator requires replacement and the linkage parts are not broken or binding.
   Mode door actuator and linkage
   1. Remove the 3 defrost/panel/floor mode door actuator screws.
   1. Disconnect the defrost/panel/floor mode door actuator electrical connector.
   1. Remove the defrost/panel/floor mode door actuator.
   1. Manually operate, and inspect the defrost/panel/floor mode door linkage for incorrect placement or damage.
   Mode door actuator linkage only
   
   1. Remove the mode door linkage.
      1. Depress the tab and remove the panel door lever.
      1. Remove the floor/defrost door intermediate lever screw and floor/defrost door intermediate lever.
      1. Pull straight outward to remove the floor/defrost door lever.
   Mode door actuator and linkage
   
   1. NOTE: When installing the mode door actuator, make sure that the panel door lever and floor/defrost intermediate lever are correctly aligned with the mode door actuator cam.
      To install, reverse the removal procedure.

A few things to check:

• Check coolant level
• Heater core may be plugged or restricted
• Heater core may be air bound
• Thermostat may not be operating properly
• Water pump may not be circulating coolant

No heat from heater
I have a 2001 Windstar which had the same problem. At first when you adjusted the temperature selector you could hear a slight thumping noise coming from the temperature selector. I dismantled everything to get to where the noise came from. After hours of messing around, this is what I found. In front of the housing for the heater and air conditioning, right behind the radio, there is a white plastic module about the size of a pack of cigarettes. It is mounted with 3 screws I believe. This unit has a wiring harness on it that has to be unplugged for removal. It also has an D shape actuator about 1 1/2 inches long protruding from the back side that fits into a damper for the heater core. This unit has a circuit board and motor that rotate the actuator, which in turn opens and closes the damper allowing the air to pass through the heater core. What happens is that the motor drives a couple of plastic gears that strip and do longer drive the actuator. I believe the unit is called a heater damper module, dealer item only. In my neck of the woods it's about $75
When removing radio it is MUCH easier to buy "radio removal tool" from Autozone, about $2
I have a 2001 Windstar with the same problem (thumping behind the dash,no heat)I was able to remove the module without taking out the radio by removing the bottom trim under the heater controls and reaching up behind the radio.. An 8mm socket did the trick. The name of the module is a "blend door actuator" I was able to pop it open and sure enough one of the little plastic gears was stripped.
The answers I found on this site saved me some $$ and time. So I thought I would add my 2 cents worth. Situation:1999 Windstar, thumping under dash, no front heat, rear heat worked fine. Per above, I removed lower trim piece and found the actuator, took it apart and found same stripped gears. Ordered part # 655-1552 from Napa "Heat and AC Actuator" for $44.77. Works perfectly now!
I have a 2000 Windstar with this problem. My husband removed the trim under the controls & replaced the blend door actuator. Problem solved. THANK YOU so much to all those responses above. You saved us tons of money & TIME! I will use this site more for advice.
October 29th, 2008- We also have a 2000 Windstar with the same no heat problem. I took our van to a trusted local mechanic and he agreed the blend door was in fact broken. Being a hands-on guy with a need to know more before I spent ~$800 for the repair I found this site. THANK YOU THANK YOU!! The information about the Heat and AC Actuator was correct and easy to replace. I got the replacement part from Advance Auto parts for $48 and a lifetime warranty to boot. Thanks again:)
November 5, 2008: Last week, we started seeing the same problems described (cold air only, faint clicking sound when changing the desired temperature on the controls) in our 2000 Ford Windstar. I was able to access the blend door actuator (easily identifiable ... white plastic, size of a pack of cards, three screws) by removing the lower plastic panel. This is the plastic panel that is on the floor and includes the small compartment that opens to store sunglasses, etc. (not the black trim surrounding the radio or temperature controls. I had to remove four plastic screws and anchors (two on each side by the drivers legs and the passengers legs). I had to disconnect the passenger side cigarette lighter to remove the panel completely from the car. Once unscrewed and lighter disconnected, I just pulled hard until the two friction clips gave way. In this way I did not have to remove the stereo. With hindsight, I might buy the stereo removal tools next time as removing and replacing the blend door actuator from below requires that I lie upside down on the seats with my head on the floor ... doable but awkward. Hint: while accessing the part from below is awkward, simply opening the cup holder/ash tray did wonders to make the part more accessible. Once I had removed the old blend door actuator, I opened it to see that the plastic gears had in fact stripped. I went to two auto parts stores and was unable to find a suitable replacement. Napa Auto Parts could have ordered one of the parts I read about above but he said it may not be the exact same part. He recommended I go to the nearby Dealer. The dealer did have the part (he keeps several in stock). It cost me about $70. He warned me that the gears may have stripped because an object may have fallen in the vent and could be blocking the blend door. If that is the case, replacing the part will only result in another broken blend door actuator. Unfortunately, it is nearly impossible to investigate this so I simply used a screw driver to rotate the blend door manually until I was satisfied that it had the proper range of motion. I replaced the blend door actuator (again, upside down on the passenger seat with my head on the floor) and the heater now works perfectly.
Blend Door Problem
Your problem sounds like the common blend door problem on the Ford Expeditions, and Ford Explorer. The door is on a vertical axis and when it breaks, it can swing back and forth randomly giving heat or AC or nothing. The difference on acceleration is the force placed on the door swinging it one direction.

You can check the operation by fully opening the glove box, removing the actuator motor on top of the plenum box and examining the blend door axle. Pictures of the common fail signature are available on the heatertreater.net web site. There are several "free" fixes that mostly are worth what you pay for them. The solution on the web site is solid and proven over hundreds of vehicles and will resolve the problem once and for all.
The "Related Question" below is an extensive discussion on the 1999-2003 temperature control valve / heater control valve.

It is likely the information will be similar to the 1997 / 1998 Windstar

first, check under te hood to see if the heater core water hoses are hot going in and coming out. If hot going in but cold coming out, water valve (if you have one) may not be working.
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Control System Outputs
The air management doors are controlled by vacuum control motors (18A318) and an A/C electronic door actuator motor (19E616). The air inlet and distribution doors are controlled by vacuum control motors. The temperature blend door is controlled by the A/C electronic door actuator motor.
The A/C electronic door actuator motor provides a variable number of temperature blend door positions. Temperature control position energizes the A/C electronic door actuator motor moving the temperature blend door.
Vacuum control motors are used on both air distribution and air inlet doors. The air inlet and panel/defrost doors use a two position vacuum control motor. The floor duct/panel door uses a three position vacuum control motor. Vacuum control motors are controlled by engine vacuum through the climate control head.
For more information on the control components Section 412-04 .
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Air Management Doors
The air management doors are controlled by vacuum control motors (18A318) and an A/C electronic door actuator motor (19E616). The air inlet and distribution doors are controlled by a vacuum control motor. The temperature blend door is controlled by the A/C electronic door actuator motor.
The A/C electronic door actuator motor provides a variable number of temperature blend door positions. Temperature control position energizes the A/C electronic door actuator motor moving the temperature blend door.
Vacuum control motors are used on both air distribution and air inlet doors. The air inlet and panel/defrost doors use a two position vacuum control motor. The floor duct/panel door uses a three position vacuum control motor. Vacuum control motors are controlled by engine vacuum through the climate control head.
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Section 412-04: Control Components - Climate Control 1997 F-150, F-250 Workshop Manual
REMOVAL AND INSTALLATION A/C Electronic Actuator
Removal

1. Remove the floor duct panel.
   • Remove the two plastic push pins (one each side) and release the expander clip.

1. Remove the RH instrument panel brace.
   1. Remove the lower nut.
   1. Remove the upper bolt.
   1. Remove the brace.

1. Remove the LH instrument panel lower nut and position brace out of the way.

1. Disconnect the vacuum harness from the vacuum actuator.

1. Remove the floor duct.
   1. Remove the two screws (one each side).
   1. Remove the floor duct.

1. Remove the panel/floor door vacuum control motor.
   1. Disconnect the vacuum line connector.
   1. Remove the two panel/floor door vacuum control motor screws.
   1. Slide the rod out of the door and remove the panel/floor door vacuum control motor.

1. Remove the electronic actuator.
   1. Disconnect the electrical connector.
   1. Remove the three screws.
   1. Pull down to release the actuator shaft and remove the electronic actuator.

Hi!
If the Temp. Selector Control is set to Heat and blows cold air, your Blend Door Actuator may be stuck or it is inoperative. The actuator is not fixable, if it fails, it must be replaced. Follow the instructions to remove and replace it.

1. Disconnect battery negative cable from battery and properly isolate to prevent accidental reconnection.
2. Remove the instrument panel.
3. Disconnect the electrical connector from the blend door motor/actuator.
4. Remove the four screws holding the blend door actuator to the plenum.
5. Remove the temperature blend door actuator.

BLEND DOOR ACTUATOR CONNECTOR

BLEND DOOR FASTENING SCREWS

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The blend door is not working right or the in car air temperature sensor is faulty.
Removal & Installation Air Inlet Door Vacuum Motor To Remove:

1. Remove the instrument panel.
2. Remove the air inlet door motor mounting screws. CAUTION
   Do not attempt to bend any part of the air inlet duct door lever.
   
3. Rotate and remove the air inlet door vacuum control motor.

To Install:

1. Rotate and install the air inlet door vacuum control motor.
2. Install and tighten the mounting screws.
3. Install the instrument panel.

Defroster Door Vacuum Motor To Remove:

1. Remove the passenger air bag module from the instrument panel.
2. Disconnect the vacuum line and remove the mounting screws. CAUTION
   Do not attempt to bend any part of the defroster airflow mode door lever.
   
3. Rotate and remove the vacuum control motor from the defrost door lever.

To Install:

1. Rotate and install the vacuum control motor on the defrost door lever.
2. Install and tighten the mounting screws.
3. Connect the vacuum line to the vacuum control motor.
4. Install the passenger's air bag module.

Floor Console Register Duct Vacuum Motor To Remove:

1. Remove the floor console.
2. Remove the right-side instrument panel insulator.
3. Working from the passenger's footwell, disconnect the vacuum hose.
4. Remove the screws and the floor console register duct vacuum control motor. CAUTION
   Do not attempt to bend any part of the floor console register duct door lever.
   
5. Rotate and remove the vacuum control motor from the floor console register duct door.

To Install:

1. Rotate and install the vacuum control motor on the floor console register duct door.
2. Install and tighten the mounting screws.
3. Connect the vacuum hose to the floor console register duct vacuum control motor.
4. Install the insulator under the dash.
5. Install the floor console.

Panel/Floor Door Vacuum Motor To Remove:

1. Working through the driver footwell, remove the two screws and the shield. CAUTION
   Do not attempt to bend any part of the airflow mode door lever.
   
2. Label and disconnect the two vacuum hoses.
3. Remove the mounting screw.
4. Lift, rotate and remove the panel/floor door vacuum control motor from the door lever.

To Install:

1. Install the panel/floor door vacuum control motor on the door lever.
2. Install and tighten the mounting screw.
3. Connect the vacuum hoses in their original positions.
4. Install the shield on the vacuum motor.

Auxiliary Air Distribution Blend Door Actuator To Remove:

1. Remove the right rear quarter trim panel access panel. Auxiliary climate control housing removal and installation
   
   
2. Remove the auxiliary air distribution blend door actuator screws.
3. Disconnect the auxiliary air distribution blend door actuator connector.

To Install:

1. Connect the auxiliary air distribution blend door actuator connector.
2. Install the auxiliary air distribution blend door actuator screws.
3. Install the right rear quarter trim panel access panel.

Auxiliary Temperature Blend Door Actuator To Remove:

1. Remove the right rear quarter trim panel. Auxiliary climate control housing removal and installation
   
   
2. Disconnect the temperature auxiliary temperature blend door actuator connector.
3. Remove the temperature auxiliary temperature blend door actuator screws.
4. Remove the temperature auxiliary temperature blend door actuator.

To Install:

1. Install the temperature auxiliary temperature blend door actuator.
2. Install the temperature auxiliary temperature blend door actuator screws.
3. Connect the temperature auxiliary temperature blend door actuator connector.
4. Install the right rear quarter trim panel.

--- In-Car Temperature Sensor Removal & Installation To Remove:

1. Remove the instrument cluster finish panel.
2. Disconnect the in-vehicle temperature sensor connector.
3. Disconnect the in-vehicle temperature sensor aspirator tube.
4. Remove the in-vehicle temperature sensor screws.
5. Remove the in-vehicle temperature sensor.

To Install:

1. Install the in-vehicle temperature sensor.
2. Install the in-vehicle temperature sensor screws.
3. Connect the in-vehicle temperature sensor aspirator tube.
4. Connect the in-vehicle temperature sensor connector.
5. Install the instrument cluster finish panel.

Look ,behind the glove box,on top of the hac box,toward the center of the truck,it is a flat box,with a multiple wire plug in it,it is the temp door actuator motor,that turns as you select the cold,to hot selection,it may not be turning all the way for hot.You can remove this motor,and turn it,yourself to see,it is hard to do,because it is ressesed in the box.

no u must remove the dash.

The blend door is stuck in cold position. That usually happens because the blend door actuator has failed.

You will need to test and replace the blend door actuator.

To replace the actuator you will need to take apart the dash and remove completely the instrument panel,d isconnect the connector, remove the four screws, remove the temperature blend door actuator and replace it.

The replacement is not a job for beginners, since you have to take apart the dash to access the actuator.

Regards.

Item Part Number Description 1 — Air inlet door 2 — Temperature blend door 3 — Headliner airflow 4 — Auxiliary mode door 5 — Floor airflow 6 18476 Heater core 7 19860 Evaporator core 8 19805 Blower motor
The auxiliary A/C and heating system has the following features:

• The auxiliary A/C and heating system is functional whenever the instrument panel mounted A/C control is in any position except OFF.
• The auxiliary blower motor recirculates the air inside the vehicle. Outside air is not available to the auxiliary system.
• Air is cooled and dehumidified by the auxiliary A/C evaporator core only if the instrument panel mounted A/C control is adjusted to a position that requires A/C compressor operation.
• The temperature blend door and the auxiliary mode door are controlled by electric actuator motors.
• Movement of the auxiliary temperature control between COOL and WARM causes a corresponding movement of the temperature blend door to mix air flowing through and around the auxiliary heater core.
• Movement of the auxiliary mode control between PANEL and FLOOR causes a corresponding movement of the auxiliary mode door to direct air flow between the panel (headliner) registers and the floor duct.

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I would say the auxiliary mode door (#4) electric motor is not wokring.

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Auxiliary Blend Door Actuator —Air Distribution Removal and Installation

1. Remove the RH quarter trim panel cup holder and access panel.

1. Remove the screws.

1. Disconnect the blend door actuator electrical connector.

1. To install, reverse the removal procedure.