Toyota 89452-35020 Sensor, Throttle Position

The coolant temperature sensor on four-cylinder engines is located on the rear of the cylinder head, while on the 3.0L V6 engine, it is found on the intake manifold beneath the air intake plenum at the rear, and on the 3.4L V6 engine, it is positioned behind the timing belt cover on the top of the intake manifold. Before installing a new sensor, wrap the threads with Teflon sealing tape to prevent leakage and corrosion. To remove the sensor, release the locking tab, unplug the electrical connector, and carefully unscrew it, taking care not to damage the sensor as it affects the fuel injection system. Install the new sensor quickly to minimize coolant loss and check the coolant level afterward. The Mass Airflow Sensor (MAF) is located on the air intake duct and measures the mass of air entering the engine; to replace it, disconnect the electrical connector, remove the air cleaner assembly, and lift the MAF sensor assembly from the air cleaner. The vane airflow sensor, found on 1993 and 1994 3.0L V6 engines, measures the volume of air entering the engine and is removed similarly. The Intake Air Temperature (IAT) sensor is located inside the air cleaner housing and is removed by unplugging the electrical connector and twisting it out of the rubber boot. Oxygen sensors, which monitor the oxygen content of exhaust gases, are located in the exhaust manifold or pipe; precautions include avoiding damage to the pigtail and ensuring air circulation to the sensor. Disconnect the battery before removing the oxygen sensor, and use anti-seize compound on the threads during installation. The Throttle Position Sensor (TPS) measures the throttle valve position and is located on the throttle body; it is removed by disconnecting the electrical connector and unscrewing it. The crankshaft position sensor is mounted in the timing cover for four-cylinder engines and on the oil pump for 3.4L V6 models, while the camshaft position sensor is located above the intake manifold for four-cylinder models and behind the timing belt cover for 3.4L V6 models. Knock sensors, located below the intake manifold, control spark knock by retarding ignition timing and require coolant drainage for access. The Vehicle Speed Sensor (VSS) is found at the rear of the transmission housing and sends a voltage signal to the ECM. Lastly, the EGR gas temperature sensor, mounted near the EGA valve, detects exhaust temperature and regulates EGA on/off time efficiently.

The Throttle Position Sensor (TPS) on 2004 and earlier engines is attached to the firewall side of the throttle body. Problems with the TPS or motor can cause intermittent bursts of fuel from the injectors and an unstable idle because the PCM thinks the throttle is moving. The PCM is constantly comparing the driver's input from the accelerator pedal position sensor to the actual throttle position at the throttle body. A problem with the TPS circuits will set a diagnostic trouble code. To replace a defective TPS, disconnect the cable from the negative terminal of the battery. Disconnect the electrical connector at the TPS and remove the two mounting screws. Installation is the reverse of removal. On 2005 and later engines, the throttle body is operated by an electric throttle control motor instead of a cable. On these models, the TPS is part of the throttle motor assembly and cannot be replaced separately. If there are problems with the throttle control motor or the TPS, the complete throttle body must be replaced.

The coolant temperature sensor on four-cylinder engines is located on the rear of the cylinder head, while on the 3.0L V6 engine, it is found on the intake manifold beneath the air intake plenum at the rear, and on the 3.4L V6 engine, it is positioned behind the timing belt cover on the top of the intake manifold. Before installing a new sensor, wrap the threads with Teflon sealing tape to prevent leakage and corrosion. To remove the sensor, release the locking tab, unplug the electrical connector, and carefully unscrew it, taking care not to damage the sensor as it affects the fuel injection system. Install the new sensor quickly to minimize coolant loss and check the coolant level afterward. The Mass Airflow Sensor (MAF) is located on the air intake duct and measures the mass of air entering the engine; to replace it, disconnect the electrical connector, remove the air cleaner assembly, and lift the MAF sensor assembly from the air cleaner. The vane airflow sensor, found on 1993 and 1994 3.0L V6 engines, measures the volume of air entering the engine and is removed similarly. The Intake Air Temperature (IAT) sensor is located inside the air cleaner housing and is removed by unplugging the electrical connector and twisting it out of the rubber boot. Oxygen sensors, which monitor the oxygen content of exhaust gases, are located in the exhaust manifold or pipe; precautions include avoiding damage to the pigtail and ensuring air circulation to the sensor. Disconnect the battery before removing the oxygen sensor, and use anti-seize compound on the threads during installation. The Throttle Position Sensor (TPS) measures the throttle valve position and is located on the throttle body; it is removed by disconnecting the electrical connector and unscrewing it. The crankshaft position sensor is mounted in the timing cover for four-cylinder engines and on the oil pump for 3.4L V6 models, while the camshaft position sensor is located above the intake manifold for four-cylinder models and behind the timing belt cover for 3.4L V6 models. Knock sensors, located below the intake manifold, control spark knock by retarding ignition timing and require coolant drainage for access. The Vehicle Speed Sensor (VSS) is found at the rear of the transmission housing and sends a voltage signal to the ECM. Lastly, the EGR gas temperature sensor, mounted near the EGA valve, detects exhaust temperature and regulates EGA on/off time efficiently.

If there are problems, the complete throttle body must be replaced.

A new sensor is pre-coated with thread sealant; do not apply additional sealant. Install the knock sensor and tighten it securely (approximately 14 ft-lbs), then plug in the electrical connector, refill the cooling system, and check for leaks.

not sure what other part your talking about as you only listed one number, but 89452-35020 shows correct per VIN

They are the same part, the last digits end because they are different manufacturing numbers the dealers go based off of

If the sensor were to fail it would give you code P0120

This connector has 3 pins

This rotates in a clockwise rotation