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 MANUALSOLDSMOBILE1995CUTLASS CIERA L4-2.2L VIN 4REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)TESTING AND INSPECTION
1995 Oldsmobile Cutlass Ciera L4-2.2L VIN 4
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
1995 Oldsmobile Cutlass Ciera L4-2.2L VIN 4SECTION Testing and Inspection
A Tech 1 scan tool displays the engine temperature in degrees Celsius. After the engine is started, the temperature should rise steadily to about 90°C (194°F) then stabilize when the thermostat opens. If the engine has not run for several hours (overnight) the Engine Coolant Temperature (ECT) and Intake Air Temperature (IAT) temperatures should be close to each other. A fault in the ECT sensor circuit should set a Diagnostic Trouble Code (DTC) 14 ECT Sensor Circuit (High Temp) or DTC 15 ECT Sensor Circuit (Low Temp). The diagnostic trouble charts also contain a chart to check for sensor resistance values relative to temperature. Testing and Inspection
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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.