How to Check if the Coolant Temperature Sensor is Good or Bad?

[CameronMarie]

Methods to check if the coolant temperature sensor is good or bad: If the car exhibits symptoms such as difficulty starting, weak acceleration, or coolant temperature gauge warnings, it indicates that the coolant temperature sensor is faulty. A malfunctioning coolant temperature sensor can affect the engine's power output, and the owner should replace it immediately. The car's thermostat is also prone to failure after prolonged use. Most cars use water-cooled engines, which rely on coolant circulating continuously within the engine for heat dissipation. In water-cooled engines, the coolant follows two circulation paths: a major cycle and a minor cycle. After the engine starts, the coolant initially undergoes a minor cycle, bypassing the radiator, which helps the engine warm up quickly. Once the engine reaches its normal operating temperature, the coolant switches to a major cycle, passing through the radiator for heat dissipation.