Toyota 89422-33030 Sensor, Water Temperature

Drain the engine coolant until the level is below the sensor. For V6 models, the ECT sensor is located at the back of the engine on the rear coolant crossover between the two cylinder heads. Remove the engine cover and disconnect the electrical connector from the ECT sensor. Unscrew the ECT sensor from the coolant crossover using a deep socket. Before installing the new ECT sensor, wrap the threads with Teflon tape to prevent coolant leakage. Installation is the reverse of removal, ensuring the ECT sensor is tightened to the specified torque. Refill the cooling system. For V8 models, the ECT sensor is located on the front coolant crossover directly under the throttle body. Remove the throttle body cover and the air intake duct, then disconnect the electrical connector from the ECT sensor. Unscrew and remove the ECT sensor from the front coolant crossover with a deep socket. Again, wrap the threads of the new ECT sensor with Teflon tape before installation, which follows the reverse of removal, ensuring proper torque. Finally, refill the cooling 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.

The engine coolant temperature (ECT) sensor is a thermistor that varies its resistance based on temperature changes, affecting the voltage signal sent to the PCM. As the sensor temperature decreases, resistance values increase, and as the temperature increases, resistance values decrease. Any issues in the ECT sensor circuits will trigger a diagnostic trouble code. Ensure the ignition key is in the OFF position and drain about 1 gallon of engine coolant, making sure the engine is completely cool before doing so. For 2007 and later models, remove the engine top cover by pulling up at the front edge and lifting the rear, then remove both air filter housing inlet ducts and the air filter housing assembly. For all models, wrap the threads of the new sensor with Teflon sealing tape to prevent leakage and thread corrosion. Disconnect the electrical connector and carefully unscrew the sensor, which is located at the right end of the engine, below the cooling system pressure cap. Installation is the reverse of removal, taking care to handle the coolant sensor gently, as damage to it will impact the entire fuel injection system. Finally, refill the cooling system.

Be very careful with the Engine Coolant Temperature (ECT) sensor since any damage to it will impact on the operation of the entire fuel injection system. Start by removing the engine coolant until the standard is only beneath the ECT sensor. As for V6 models, the engine cover must be unbolted, as well as the electrical connector of ECT sensor, which is situated on the rear crossover of the cylinder heads. Remove the ECT sensor from the coolant crossover by unscrewing it with help of a deep socket. To avoid anticoolant leakage after the installation of the new ECT sensor, its threads should be first wrapped with Teflon tape. As mentioned earlier removal is the opposite of installation where the bolts holding the ECT sensor must be tightened to the recommended torque. The last step is to replace/overflow the cooling system. For four cylinders: connect the electrical connector of the ECT sensor at the left rear corner of the cylinder head removed the ECT sensor from the front coolant crossover with a deep socket ; before installing a new ECT sensor, it is necessary to wrap the threads of the new sensor with Teflon tape; then, follow the reverse instruction, tighten the bolts to the specified torque before refilling the cooling system.

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.

On four-cylinder models, the coolant temperature sending unit can be removed by disconnecting the electrical connector and using a deep socket or wrench to remove the unit.

A problem in any of the ECT sensor circuits will set a diagnostic trouble code.

The Engine Coolant Temperature (ECT) sensor is a component that monitors the temperature of the engine coolant and relays the information to the Powertrain Control Module (PCM) for engine management and to the temperature gauge on the instrument panel.

The ignition key should be in the OFF position.

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.

Drain approximately 1/4 of the engine coolant to bring it below the level of the ECT sensor.

Yes, proper disposal of used coolant is still required.

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.

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