Grand Cherokee 2WD V8-5.2L VIN Y (1998)
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
ENGINE COOLANT TEMPERATURE SENSOR REMOVAL
WARNING: Hot, pressurized coolant can cause injury by scalding. Cooling system must be partially drained before removing the coolant
temperature sensor.
1. Partially drain cooling system.
Fig. 87 ECT Sensor
2. Disconnect electrical connector from sensor (Fig. 87).
3. Engines with air conditioning: When removing the connector from sensor, do not pull directly on wiring harness. Fabricate an L-shaped hook tool
from a coat hanger (approximately eight inches long). Place the hook part of tool under the connector for removal. The connector is snapped
onto the sensor. It is not equipped with a lock type tab.
4. Remove sensor from intake manifold.
INSTALLATION
1. Install sensor.
2. Tighten to 11 Nm (8 ft. lbs.) torque.
3. Connect electrical connector to sensor. The sensor connector is symmetrical (not indexed). It can be installed to the sensor in either direction.
4. Replace any lost engine coolant.