Engine Coolant Temperature (ECT) Sensor
WARNING: This page is about a different car, the 1995 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.
Sensor is located in engine, near alternator. With sensor disconnected, measure resistance between sensor terminals. Refer to the ECT SENSOR RESISTANCE table. Replace sensor as necessary.
ECT SENSOR RESISTANCE
| Temperature | Ohms |
|---|---|
| -4°F (-20°C) | 14,600-17,800 |
| 68°F (20°C) | 2200-2700 |
| 104°F (40°C) | 1000-1300 |
| 140°F (60°C) | 500-650 |
| 176°F (80°C) | 290-350 |