Scion 89422-33030 Sensor, Water Temperature

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To replace the Coolant Temperature Sensor, start by ensuring the ignition key is in the OFF position. Then, remove the engine covers and drain approximately one gallon of coolant from the cooling system. Next, remove the air filter housing. Disconnect the electrical connector and unscrew the sensor. For four-cylinder models, the ECT sensor is located on the left end of the cylinder head, while for V6 models, it is located on the left end of the engine on the coolant crossover between the cylinder heads. Before installing the new sensor, wrap its threads with Teflon sealing tape to prevent leakage and thread corrosion. Finally, carefully handle the coolant sensor during installation, as damage to it can affect the operation of the entire fuel injection system.

To replace the Coolant Temperature Sensor, start by ensuring the ignition key is in the OFF position. Then, remove the engine covers and drain approximately one gallon of coolant from the cooling system. Next, remove the air filter housing. Disconnect the electrical connector and unscrew the sensor. For four-cylinder models, the ECT sensor is located on the left end of the cylinder head, while for V6 models, it is located on the left end of the engine on the coolant crossover between the cylinder heads. Before installing the new sensor, wrap its threads with Teflon sealing tape to prevent leakage and thread corrosion. Finally, carefully handle the coolant sensor during installation, as damage to it can affect the operation of the entire fuel injection system.

On V6 models, drain the coolant, remove the intake manifold, detach the electrical connector, and loosen the Coolant Temperature Sensor from the crossover to replace the sensor. For V8 models, remove the throttle body cover and air intake duct, and undo the sensor from the coolant crossover. For all models, install a new sealing washer and fill up the cooling system.

The coolant temperature gauge sending unit aids the Engine Coolant Temperature sensor by sending information on the engine coolant temperature to the gauge on the console. The coolant temperature gauge sending unit and the sensor give accurate temperature readings and help prevent overheating or other system issues.

To replace a coolant temperature sensor, start by allowing the engine to cool down and then slowly remove the radiator cap to release the pressure in the cooling system. If a new sensor is being fitted, there is no need to drain the system, but if the sensor will be left out for some time, a plug should be inserted to prevent coolant loss. Disconnect the sensor wiring plug and unscrew the sensor, making sure to recover the O-ring seal if applicable. When refitting, tighten the sensor securely and ensure the connector seal is in place before connecting the wiring. Finally, refill or top-up the cooling system as needed. It is important to note that all models have a temperature display warning light, with blue indicating a cold engine and red indicating a hot engine.

Installation is otherwise the reverse of removal. Be sure to tighten the ECT sensor to the specified torque.

The steps for disposing of used coolant are to drain the coolant and then follow the appropriate disposal methods.

Disconnect the electrical connector and carefully unscrew the sensor.

Depending on the model, either unscrew the ECT sensor from the water outlet housing or, for 2GR-FKS models, carefully remove the retaining clip and pull out the ECT sensor.

1. Ensure the ignition key is in the OFF position. 2. Drain the engine coolant and the transaxle/inverter/converter coolant. 3. Remove the inverter/converter assembly. 4. Disconnect the wiring from the sensor and remove it along with the gasket (the ECT sensor is located at the left end of the engine). 5. Installation is the reverse of removal, ensuring to replace the gasket. 6. Refill the cooling systems.

The ECT sensor plays a crucial role in engine management by providing information to the PCM about the engine coolant temperature. The PCM then adjusts the engine's performance accordingly to ensure optimal performance and prevent overheating.

Remove the ECT sensor as described in the previous steps.

Yes, proper disposal of used coolant is still required.

1. Remove the engine top cover by pulling up at the front edge and then lifting the rear. 2. Remove both air filter housing inlet ducts. 3. Remove the air filter housing assembly.

Drain the coolant, disconnect the wiring connector from the sending unit, remove the sending unit using a deep socket or a wrench, and install the new unit securely. Do not use thread sealer as it may electrically insulate the sending unit.

Handle the ECT sensor with care, as damage to this sensor will affect the operation of the entire fuel injection system.

1. Disconnect the electrical connector from the ECT sensor (located at the left rear corner of the cylinder head, intake manifold removed for clarity). 2. Unscrew and remove the ECT sensor from the front coolant crossover with a deep socket. 3. Before installing the new ECT sensor, wrap the threads of the sensor with Teflon tape to prevent coolant leakage. 4. Installation is otherwise the reverse of removal. Be sure to tighten the ECT sensor to the torque. 5. Refill the cooling system.

To replace the ECT sensor on 1UR-FE, 3UR-FE, and 3UR-FBE V8 engines, the engine cover needs to be removed. The electrical connector should be disconnected from the ECT sensor, and then the sensor can be unscrewed from the front coolant crossover.

BEST TO HAVE IT LOOKED AT BEING ELECTRICAL, ITEM IS THE TEMP SENSOR BUT BEST TO HAVE DIAGNOSED, COULD BE IN THE FANS, WIRING, OR EVEN FUSES

Yes, this part includes a new washer