Hi,
Yes, there is a blend air door that controls the air temp coming into the vehicle. What I would recommend is to simply check to see if it is working. Remove it and change the temp at the dash and see if it moves. If it doesn't, replace it. Also, when you take it apart, confirm the linkage between the actuator and door is attached.
Here is a link that shows in general how one is replaced:
https://www.2carpros.com/articles/replace-blend-door-motor
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Here are the directions specific to your vehicle. This isn't a bad one to access. The attached pics correlate with the directions.
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2004 Ford Taurus V6-3.0L DOHC VIN S
Temperature Blend Door Actuator
Vehicle Heating and Air Conditioning Air Door Actuator / Motor Service and Repair Procedures Temperature Blend Door Actuator
TEMPERATURE BLEND DOOR ACTUATOR
TEMPERATURE BLEND DOOR ACTUATOR
REMOVAL
pic 1
1. Remove the right-side lower instrument panel insulator.
pic 2
2. Remove the temperature blend door linkage shield.
pic 3
3. Remove the temperature blend door actuator.
1 Disconnect the electrical connector.
2 Remove the screws.
3 Remove the temperature blend door actuator.
INSTALLATION
1. To install, reverse the removal procedure.
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Let me know if this helps or if you have other questions. Also, if you have the chance, let me know if this fixes the problem.
Take care,
Joe
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Thursday, April 9th, 2020 AT 5:28 PM