TESTING

Except 1995–98 2.0L Non-Turbo Engine

1. Drain the engine coolant to a level below the intake manifold.
2. Disconnect the sensor wiring harness and remove the coolant temperature sensor from the engine.

   Fig. 1: Measure resistance with the ECT sensor in a pan of water — except 1995–98 2.0L turbo engines

3. Place the temperature sensing portion of the sensor into a pan of hot water. Use a thermometer to monitor the water temperature.
4. Measure the resistance across the sensor terminals while the sensor is in the water. Compare obtained reading to specifications:
   1. Water temperature of 32°F (0°C) — 5.1–6.5 kilo-ohms present
   2. Water temperature of 68°F (20°C) — 2.1–2.7 kilo-ohms present
   3. Water temperature of 104°F (40°C) — 0.9–1.3 kilo-ohms present
   4. Water temperature of 176°F (80°C) — 0.26–0.36 kilo-ohms present
5. If the resistance differs greatly from standard value, replace the sensor.

1995–98 2.0L Non-Turbo Engine

1. Detach the engine coolant temperature sensor connector.
2. Measure the resistance between the sensor terminals, and compare with the following specifications:
   1. At 77°F (25°C) the resistance should be 9–11 kilo-ohms.

      Fig. 2: Measure the resistance of the engine coolant temperature sensor (1) with an ohmmeter (2) — 1996 2.0L engine shown

   2. At 212°F (100°C) the resistance should be 0.6–0.8 kilo-ohms.
3. If resistance falls outside of specifications, replace the sensor.