Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.
- Disconnect the negative battery cable.
- Disconnect the sending unit wire.
- Drain the engine coolant below the level of the sending unit.
- Remove the sending unit from the engine using a deep socket.
- Coat the sending unit threads with Teflon® tape or electrically conductive sealer.
- Install the sending unit and tighten it to 11-14 ft. lbs. (15-20 Nm).
- Attach the sending unit wire.
- Fill the engine with coolant.
- Start the engine, allow it to reach operating temperature, bleed the cooling system, and check for leaks.
- Check for proper sending unit operation.