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 MANUALSCADILLAC1997SEVILLE SLS V8-4.6L VIN YREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)SERVICE AND REPAIR
1997 Cadillac Seville SLS V8-4.6L VIN Y
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
1997 Cadillac Seville SLS V8-4.6L VIN YSECTION Service and Repair
ECT SENSOR REPLACEMENT PROCEDURE
Notice:
^ Allow sufficient time for the engine to cool before removing the Engine Coolant Temperature (ECT) sensor. Excessive coolant loss or personal injury may result if the engine is hot.
^ Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
Removal Procedure
1. Partially drain the coolant system.
2. Disconnect the ECT sensor connector.
3. Remove the ECT sensor.
Installation Procedure
Notice: A non-hardening sealer should be applied to the sensor threads prior to installation to prevent coolant leaks. Use P/N 1050805 or equivalent
1. Install the ECT sensor. Tighten the ECT sensor to 20 Nm (15 lb ft).
2. Connect the ECT sensor connector.
3. Refill the coolant system.
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.