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.
2003 Isuzu Rodeo 2WD V6-3.2LFACTORY OEM SERVICE PROCEDURE
Engine Temperature Sensor: Service and Repair
Engine Coolant Temperature (ECT) Sensor
REMOVAL PROCEDURE
NOTE: Care must be taken when handling the engine coolant temperature (ECT) sensor. Damage to the ECT sensor will affect proper operation of the fuel injection system.
1. Disconnect the negative battery cable.
2. Drain the radiator coolant. Refer to Draining and Refilling Cooling System in Engine Cooling section.
3. Disconnect the electrical connector.
4. Remove the ECT sensor from the coolant crossover.
INSTALLATION PROCEDURE
1. Apply sealer or the equivalent to the threads of the ECT sensor.
2. Install the ECT sensor in the coolant crossover.
Tighten
Tighten the ECT sensor to 30 N.m (22 lb ft.).
3. Connect the electrical connector.
4. Fill the radiator with coolant. Refer to Draining and Refilling Cooling System in Engine Cooling section.
5. Connect the negative battery cable.
REMOVAL PROCEDURE
NOTE: Care must be taken when handling the engine coolant temperature (ECT) sensor. Damage to the ECT sensor will affect proper operation of the fuel injection system.
1. Disconnect the negative battery cable.
2. Drain the radiator coolant. Refer to Draining and Refilling Cooling System in Engine Cooling section.
3. Disconnect the electrical connector.
4. Remove the ECT sensor from the coolant crossover.
INSTALLATION PROCEDURE
1. Apply sealer or the equivalent to the threads of the ECT sensor.
2. Install the ECT sensor in the coolant crossover.
Tighten
Tighten the ECT sensor to 30 N.m (22 lb ft.).
3. Connect the electrical connector.
4. Fill the radiator with coolant. Refer to Draining and Refilling Cooling System in Engine Cooling section.
5. Connect the negative battery cable.
Factory Service Tools
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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.
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