LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1993 >> LS 400 V8-4.0L (1UZ-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Coolant Temperature Sensor/Switch (For Computer) >> Service and Repair >> Removal
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Removal

PROCEDURE





1. Disconnect negative terminal cable from battery.

CAUTION: Work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position and the negative (-) terminal cable is disconnected from the battery.

2. Drain engine coolant.
3. Remove lower high-tension cord cover.





4. Remove righthand ignition coil.
- Disconnect the ignition coil connector.
- Remove the 2 bolts and disconnect the ignition coil.





5. Disconnect the following hoses:
- Upper radiator hose from front water bypass joint (1)
- Lower radiator hose from water inlet (2)
- Radiator reservoir hose from water inlet housing (3)





6. Remove water inlet and inlet housing.
- Disconnect the water bypass hose from the water inlet housing.





- Remove the 2 bolts holding the water inlet housing to the water pump.
- Pull out the water inlet and inlet housing assembly.
- Remove the 0-ring from the water inlet housing.





7. Remove engine coolant temperaure sensor.
- Disconnect the engine coolant temperaure sensor connector.
- Remove the engine coolant temperaure sensor and gasket.