GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Intrigue 🢒 Engine 🢒 Engine Cooling 🢒 Engine Coolant Temperature Sensor Replacement

Removal Procedure
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.8L.
  2. Partially drain the engine coolant from the cooling system. Refer to Cooling System Draining and Filling .

    3. Object Number: 246364 Size: SH
  3. Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector.

    4. Object Number: 190569 Size: SH
  4. Remove the ECT sensor from the engine.

Installation Procedure

    Object Number: 190569 Size: SH
  1. Install the ECT sensor to the engine.

    2. Tighten
    Tighten the engine coolant temperature sensor to 25 N·m (18 lb ft).


    Object Number: 246364 Size: SH
  2. Connect the Engine Coolant Temperature (ECT) sensor electrical connector.
  3. Fill the cooling system with engine coolant. Refer to Cooling System Draining and Filling .
  4. Inspect for leaks.
  5. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical - 3.8L.