Engine Coolant Temperature Sensor Removal / Installation - 4.0L

Fig 1: Identifying Engine Coolant Temperature Sensor Components - 4.0L

Courtesy of MAZDA MOTORS CORP.

1. Disconnect battery. See BATTERY DISCONNECT .
2. Partially drain the cooling system. See ENGINE COOLANT REPLACEMENT -- 4.0L .
3. Disconnect engine coolant temperature (ECT) sensor connector.
4. Remove the clip and the ETC sensor. Discard the O-ring seal.
5. To install, reverse the removal procedure.
   • Install a new O-ring seal.