Engine Coolant Temperature (ECT) Sensor
Turn ignition off. Disconnect negative battery cable. Drain coolant. Remove ECT sensor. See COMPONENT LOCATIONS under INTRODUCTION. With sensing portion of ECT sensor submerged in water, measure resistance between terminals. Replace ECT sensor if resistance is not as specified. See ECT SENSOR RESISTANCE table.
ECT SENSOR RESISTANCE
| Application & Temperature °F (°C) | (1) Ohms | ||
|---|---|---|---|
| -4 (-20) | 10,000-20,000 | ||
| 32 (0) | 4000-7000 | ||
| 68 (20) | 2000-3000 | ||
| 104 (40) | 800-1200 | ||
| 140 (60) | 400-750 | ||
| 176 (80) | 200-400 | ||
| 212 (100) | 120-250 | ||
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