3500 4x4 Pickup L6-359 5.9L DSL Turbo (1996)
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
ENGINE COOLANT TEMPERATURE SENSOR - DIESEL ENGINE
The Engine Coolant Temperature (ECT) sensor is located on the lefi side of the cylinder head behind the fuel filter and below the intake manifold.
REMOVAL
WARNING: THE COOLING SYSTEM MAY BE UNDER PRESSURE. HOT COOLANT CAN CAUSE BURNS.
1. Partially drain cooling system until coolant level is below cylinder head.
2. Drain and remove fuel filter/water separator.
3. Disconnect ECT sensor pigtail harness connector from sensor.
4. Remove ECT sensor from cylinder head.
INSTALLATION
1. Apply sealant to sensor threads.
2. Install ECT sensor into cylinder head. Tighten to 55 Nm (40 ft. lbs.) torque.
3. Connect ECT sensor wire connector.
4. Install fuel filter and bleed fuel.
5. Fill cooling system and check for coolant leaks.