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 MANUALSFORD1994RANGER 2WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)SERVICE AND REPAIR
1994 Ford Ranger 2WD L4-140 2.3L SOHC
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
1994 Ford Ranger 2WD L4-140 2.3L SOHCSECTION Service and Repair
REMOVAL
NOTE: The Engine Coolant Temperature (ECT) sensor is located in a tee in the heater water hose.
1. Disconnect negative battery cable.
2. Partially drain cooling system.
3. Disconnect ECT sensor electrical connector.
4. Remove ECT sensor from tee in heater water hose.
INSTALLATION
1. To install, reverse removal procedures.
2. Tighten the ECT sensor to 8-13 Nm (6-8 ft lb).
3. Refill cooling system.
NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module relearns its adaptive strategy. The vehicle may need to be driven 10 miles or more to relearn the adaptive strategy.
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.