How to Change a Coolant Temperature Sensor: A Step-by-Step Guide

The engine coolant temperature sensor plays a crucial role in regulating the cooling system of your vehicle. It monitors the engine's coolant temperature and sends signals to the Engine Control Module (ECM) to adjust the fan speed accordingly. Over time, the sensor may fail or become faulty, leading to issues with the cooling system. In this article, we'll guide you through the process of changing a coolant temperature sensor.

Tools Required

* Flat head screwdriver

* Torque wrench

* New engine coolant temperature sensor

Step 1: Locate the Coolant Temperature Sensor

The sensor is located under the intake tube and can be accessed by removing the air cleaner case sub-assembly (see page EM-59). Remove the connector from the old sensor before proceeding.

Step 2: Disconnect the Old Sensor Connector

Disconnect the engine coolant temperature sensor connector from the old sensor. Make sure to take note of its location for reconnection later.

Step 3: Install the New Sensor

Insert your flat head screwdriver into the clip and push it towards the windshield to open it. Then, install the new engine coolant temperature sensor by sliding it into place under the intake tube. Ensure it's securely seated before proceeding.

Step 4: Reconnect the Sensor Connector

Reconnect the sensor connector to the new sensor, making sure it's securely fastened.

Step 5: Check Fan Operation

Check the fan operation by turning on the ignition and monitoring its speed. The fan should operate correctly with the new sensor in place.

Tips and Considerations

* It's essential to check the fan operation after replacing the coolant temperature sensor, as a faulty sensor can cause issues with the cooling system.

* If you're experiencing

Change coolant temperature sensor