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.
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
1997 Oldsmobile LSS V6-3.8L VIN KSECTION Service and Repair
NOTICE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
REMOVAL PROCEDURE
IMPORTANT: Care must be taken when handling engine coolant temperature sensor. Damage to the engine coolant temperature sensor will affect proper operation of the fuel injection system.
1. Disconnect the negative battery cable.
2. Drain the radiator coolant.
3. Disconnect the ECT sensor electrical connector.
4. Using a 19 mm deep well socket and an extension remove the ECT sensor.
INSTALLATION PROCEDURE
1. Hand start the ECT Sensor into the engine.
2. Tighten the ECT Sensor to 30 Nm (22 lb ft).
3. Connect the electrical connector.
4. Refill the radiator with coolant.
5. Connect the negative battery cable.
6. Start the engine and check for leaks.
7. Check the coolant level.
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.