Engine Coolant Temperature (ECT) Sensor
ECT sensor is threaded into upper right of engine. Unplug 2-wire connector (Red/White and Green/White wires) from sensor. Measure resistance across sensor terminals. Resistance should be as specified in ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE table.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE
| Temperature °F (°C) | (Ohms) |
|---|---|
| -4 (-20) | 15,000-18,000 |
| 68 (20) | 1000-4000 |
| 176 (80) | 200-400 |
| 248 (120) | 50-150 |