We are continuing our series on how to diagnose and repair your vehicle's a/c system. The last two episodes dealt with low refrigerant (low r-134a refrigerant) and testing an a/c compressor clutch. Today we're looking at the Evaporator Temperature Sensor. Subscribe today and save hundreds (if not thousands of dollars) repairing your own vehicle.

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The evaporator temperature sensor is commonly found on many vehicles. It is a part of the vehicle’s AC system, and as its name implies, detects and monitors the temperature of the AC system’s evaporator. The sensor (or switch) is usually installed directly on the AC evaporator or in close proximity and monitors the temperature of the evaporator so that it can be properly regulated to stay within reasonable operating temperatures. When the sensor detects that the temperature is approaching high temperatures, the AC system will increase flow through the system to increase cooling and will reduce flow when it detects that the evaporator is cold to conserve power and prevent it from freezing over. When the sensor fails or has any issues, it can hinder the performance of the AC system and even cause it to malfunction. Usually, a bad or failing evaporator temperature switch will produce a few symptoms that can alert the driver of a potential issue that should be serviced.

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Chapters:
0:00 - Intro
:29 - Locating evaporator temp sensor
1:28 - Removing evaporator temp sensor
1:46 - Testing evaporator temp sensor
3:00 - Wrap up


Note:
Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is a member of the Amazon Influencer Program.

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