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The coolant temperature sensor is an electronic element of the car that is located in the engine cooling system. Using the sensor, the coolant temperature in the engine cooling system is determined, then the information is transmitted to the dashboard, and the driver directly monitors the engine temperature. And also if the temperature rises above the set point, the control signal from the sensor turns on the engine cooling fan.

The main sign of a sensor malfunction is overheating of the motor. What can I say about the error on the dashboard. In addition, a breakdown of the coolant temperature sensor is indicated by an antifreeze leak, increased engine speed at idle, high fuel consumption, or poor starting of a cold engine.

The coolant temperature sensor cannot be repaired and therefore requires a complete replacement.

Steps to replace the coolant temperature sensor

  1. A problem is diagnosed, such as engine overheating.
  2. We carry out all work on a cooled engine. Before starting the repair, briefly unscrew the cap of the expansion tank to relieve pressure (ideally, we recommend completely draining the antifreeze).
  3. Remove elements that interfere with access to the sensor.
  4. Remove the damaged sensor.
  5. Install all previously removed elements in the reverse order.
  6. Fill with antifreeze to the specified level.
  7. Carry out diagnostics of engine operation. Start the engine, check the instrument readings on the driver's panel. Wait for the cooling fan and thermostat to operate.

The first time after repair, you need to monitor the engine temperature while driving, and also monitor the cooling fan turning on.


"Coolant sensor replacement" fixes "Faulty coolant temperature sensor"

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Four common causes for an “engine temperature” light on the vehicle and their related parts.
This fix will help eliminating

Engine Temperature Light

The engine temperature warning light basically says, “We’re overheating.” Commonly, the car might be running low on coolant. But it can also be an airflow clog-up, broken fans, or leaks.

Are you noticing the engine temperature warning light on your dashboard? This light is an essential indicator of something wrong with your vehicle. But don't worry; paying attention to your car's behavior and understanding how to communicate it with your local auto shop helps you assess the problem before it worsens.

In this article, we're going to focus on common causes of the engine temperature warning light. We'll also give you tips on communicating with a mechanic in case you seek professional assistance. So don't wait; read on and better understand your car's needs.

Learn More about the Symptom

Other Vehicle Symptoms

Below are just a few examples of typical Symptoms and Fixes your car might be experiencing

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