The temperature of the coolant is regulated by a sensor. The coolant temperature sensor uses an electrical resistance to monitor the temperature. Problems with this sensor can cause engine overheating issues and poor fuel economy. See this slideshow to know how to recognize a faulty coolant temperature sensor in your car.
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How to Recognize the Faulty Coolant Temperature Sensor in your Car
1. How to Recognize the
Faulty Coolant Temperature
Sensor in your Car?