RAM 3500 Truck 2WD L6-359 5.9L DSL Turbo VIN D FI (1998)
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
Fig 13 ECT Sensor
The Engine Coolant Temperature (ECT) sensor is located on the left 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.
