Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1994TAURUS GL, 4D SEDAN, 3.8 4REPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSA/C-HEATER SYSTEM - AUTOMATIC
1994 Ford Taurus GL, 4D Sedan, 3.8 4
A/C-Heater System - Automatic
1994 Ford Taurus GL, 4D Sedan, 3.8 4SECTION A/C-Heater System - Automatic
- Torque Specifications
- A/C System Specifications
- Description
- Operation
- Testing
- Notes
- A/C System Performance
- Diagnostic Procedure
- EATC Self-Diagnostic Test
- Error Code Diagnosis
- EATC System Functional Test
- Diagnosis When EATC Self-Diagnostics Indicate No Errors Found
- Notes
- Cool Air Discharge With System Set At 90°F In AUTOMATIC Mode
- Warm Air Discharge With System Set At 60°F In AUTOMATIC Mode
- Cool Air Discharge In 85°F & Maximum Heat Discharge In 90°F
- Heated Air Discharge In 65°F & Cool Air Discharge In 60°F
- No Blower
- Blower Operates In High Speed Only
- A/C Compressor Clutch Engaged In OFF Position
- Control Panel Digital Display Does Not Light (Blower Off)
- Cold Air Delivered During Heating With Engine Cold
- Temp. Display Does Not Switch From Fahrenheit To Celsius
- System Does Not Control Temperature
- Eatc Cntrl Panel Turns On & Off Erratically W/ No Sys. Cntrl
- No A/C Compressor Clutch Operation
- A/C Compressor Clutch Does Not Disengage When In Off Position
- Blower Speed Controller & High-Speed Blower Relay
- Electronic Actuator Motor Door Test
- Vacuum System Test
- Removal & Installation
- Notes
- Compressor
- Accumulator-Drier
- Instrument Panel
- Evaporator Case
- Evaporator Core
- Heater Core
- Blower Motor
- Fresh/Recirculated Air Door Vacuum Actuator
- Panel/Defrost Door & Panel/Floor Door Vacuum Actuators
- EATC Control Panel
- SUNLOAD Sensor
- In-Car Temperature Sensor
- Ambient Temperature Sensor
- Blower Speed Controller
- Cold Engine Lock-Out Switch
- A/C Electronic Door Actuator Motor/Temp Blend Door Actuator
- Wiring Diagrams
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.