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Posted on Nov 05, 2010
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Only cold air is available, what can I do to fix the blend door temporarily

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Duane Wong

Duane Wong

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  • Ford Master 6,826 Answers
  • Posted on Nov 05, 2010
Duane Wong
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I would repair the problem if I have to disassemble the varioius parts to get at the air doors --- In-Vehicle Temperature Sensor Removal & Installation To Remove:
In-vehicle temperature sensor Only cold air is available, what can I do to fix - ford-10-00-433.gif

  1. Remove the climate control head.
  2. While pressing the retaining tabs inward, remove the in-car temperature sensor.
To Install:
  1. While pressing the retaining tabs inward, install the in-car temperature sensor.
  2. Install the climate control head.
---
Air Door Actuators/Motors Removal & Installation Air Inlet Door (Recirculation) 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 onto 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 (Heater Air Damper) Door Vacuum Motor To Remove:
Panel/floor door vacuum control motor shield Only cold air is available, what can I do to fix - ford-10-00-403.gif/images/ford-10-00-403.gif" alt="ford-10-00-403.gif" class="h_mi" />

  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 vacuum control motor mounting screws.
  4. Lift, rotate and remove the panel/floor (heater air damper) door vacuum control motor from the door lever.
To Install:
  1. Install the panel/floor (heater air damper) door vacuum control motor on the door lever.
  2. Install and tighten the mounting screws.
  3. Connect the vacuum hoses in their original positions.
  4. Install the shield on the vacuum motor.
Temperature Blend Door Actuator To Remove:
  1. Remove the integrated control panel.
  2. Remove the right-side lower instrument panel insulator.
  3. Lower the glove compartment.
  4. If equipped with Electronic Automatic Temperature Control (EATC), remove the 2 remote climate control module screws and position the module aside.
  5. Remove the temperature blend door linkage shield.
  6. Disconnect the temperature blend door electrical connector.
  7. Remove the temperature blend door actuator mounting screws.
  8. Remove the temperature blend door actuator.
To Install:
  1. Position the temperature blend door actuator on the plenum.
  2. Install the temperature blend door actuator mounting screws.
  3. Connect the temperature blend door electrical connector.
  4. Install the temperature blend door linkage shield.
  5. If equipped with Electronic Automatic Temperature Control (EATC), reposition the remote climate control module and install the 2 mounting screws.
  6. Raise the glove compartment.
  7. Install the right-side lower instrument panel insulator.
  8. Install the integrated control panel.
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You may have a broken blend door or control, blend moor is very hard to fix.
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Air Temperature Control Blend Door Failure No Heat

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.

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Cold air like, really cold or just cool. Sounds like your hot/cold blend door motor has perhaps failed with the blend door in the semi hot position. Blend door motor failure is very common on the Ford truck HVAC systems. Is is located behind the glovebox on top of the HVAC housing assembly.
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Last week I ran the air conditioning unit in my 2006 Pontiac Torrent, when I got home the weather had turned cold so I put it back on the heat, however, the heater does not work now, all it does is blow...
Hello first of all

Your blend door motor / acuator is bad its basiclly a door that opens and closes when you flip your
heat to ac dial to either allow the hot air through the vents or cold air.

That being said on some suv and cars and trucks you can replace the motor that controlls this blend door can be changed without removing the dash and some you haveto remove the dash.


The blend door is located right by the heater core in the dash but sometimes the motor that controlls the door blend door is accsesable without dash removal and sometimes it is. I posted a picture below of what part is bad i hope it helps you.

If it helps please leave me 4 thumbs up thanks

jamiesturm29_5.jpg
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May 17, 2011 • 2006 Pontiac Torrent
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Heater core could be blocked up, or the blend door is stuck on the cold side of the a/c evaporator or the blend door is stuck in the cold position.
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Sep 09, 2010 • 2002 Dodge Caravan
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My air conditioner is working but won't blow out
Are you saying the temp blend door is not working?
If yes, it's the control head or the temp blend door motor on th plenum case under the dash. Buy used on ebay.

DO you have manaul or electroic controls?

If electronic

A/C Electronic Blend Door Actuator The A/C electronic blend door actuator is located on top of the A/C evaporator core housing (19A553) assembly.
  • Its function is to move the A/C air temperature control door on command from the control assembly.
  • The A/C electronic blend door actuator contains a reversible electric motor and a potentiometer. The potentiometer wiper is connected to the actuator output shaft and moves with the output shaft to indicate the position of the A/C air temperature control door.
  • A five volt signal is applied to the ends of the potentiometer. The voltage available at the wiper indicates the position of the potentiometer. The expressed value of the actuator wiper voltage is sent to the control module and matched with the wiper voltage of the module potentiometer. The printed circuit board then drives the actuator motor in whichever direction is necessary to make the actuator wiper voltage agree with the control module wiper voltage.
-----------------------------------------------------------
manual

#3 is the blend door.

0425af0.gif
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How can I fix
This is either an out of phase issue or a temperature control blend door or blend door motor actuator problem, it can also be the climate control module in the dash, 1st try disconnecting the battery for 5 min's to re-sync the climate control module, if this fails u will need to find out what blend door is the problem or if they are ok replace the automatic climate control module in the dash
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May 29, 2009 • 2000 Cadillac Eldorado
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03 jetta heater
Sure sounds like a blend air door problem. The rotary temperature knob moves a cable that moves the blend air door. There is a bushing in the housing that likes to break and will either leave the door closed no heat or open heat when a/c is on. TSB 8506-01 covers this problem.
A/C - Can't Adjust Temperature Output Control
85 06 01
July 11, 2006
2012432

b7b0041.gif



Affected Vehicles
Condition
HVAC, Temperature Output Control Cannot Be Adjusted
Customer states cannot adjust temperature and/or A/C is not cold.
Technical Background
The blend door control lever moves freely, but the blend door does not operate.


4148ac5.jpg

A bushing that fits on the lever may have a broken tab/clip, -arrows-, as shown.
This tab/clip may cause the bushing to fall out of the fresh air housing which can result in the door becoming inoperative and result in undesired air temperature.
Production Solution
No production change required.
Service Procedure
Tip:
In the past the entire fresh air housing was replaced because the bushing was not available as a separate part. The bushing is now available as a separate part.
The bushing can be accessed from under the center console.

050cdf9.jpg

^ Remove the panels near the foot wells at the passenger side of the console, -arrows-, as shown.
See Repair Manual, Body-Interior, Repair Group 68 - Interior Equipment for removal procedure.

0c75719.jpg

^ This will expose the location of the control lever, -arrow-, as shown.

2d9ed98.jpg

^ Re-bolt a new bushing onto the lever, -arrow-, as shown.
^ Re-insert the bushing with lever onto the blend door until it is firmly secured in the housing.
Tip:

1ec1246.jpg

A mirror can be used to aid in identifying the orientation of the blend door when re-securing the bushing in the fresh air housing, -arrow-, as shown.
^ Reinstall panels.

Hope you are good at working in tight spots and with mirrors. I just did this job 2 weeks ago. It took 1 hour and was really a pain in the B==t working upside down with a mirror through a 1 inch hole. Hope this helps and Good Luck Happy New year and thanks for using FixYa.
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