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As far as the heater not working properly, confirm the engine coolant is clean and full first. If it is, I need you to check something for me. Because of the mileage on the vehicle, the heater core may be plugging. To check, allow the engine to warm up to operating temp with the heater on high. Then, feel both of the heater core hoses. Both should be hot. One will be hotter than the other because one is the supply and the other is the return. If both hoses are hot, then the core is allowing coolant to flow. That leads me to the next possibility, the blend air door actuator.
The blend air door actuator is what determines the air temp entering the vehicle. If the heater core is good, this would be my next suspect. It is located under the dash on the HVAC system. Here are the directions for replacement. What I would do is access the actuator and see if it is functioning.
Before the directions, take a look through these links and see if they help in any way.
https://www.2carpros.com/articles/car-heater-not-working
https://www.2carpros.com/articles/replace-blend-door-motor
Here are the directions. The attached pics correlate with these directions.
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2002 Ford Taurus V6-3.0L VIN U
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
REMOVAL
1. Remove the integrated control panel.
pic 1
2. Remove the right-side lower instrument panel insulator and glove box.
VEHICLES WITH EATC
3. Remove the 2 remote climate control module screws and position the module aside.
pic 2
4. Remove the temperature blend door linkage shield.
pic 3
5. 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 any of this helps or if you have questions.
Take care,
Joe
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Tuesday, June 22nd, 2021 AT 11:26 AM
(Merged)