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Overheating engine The coolant temperature sensor can also fail in a manner that causes it to send a permanently hot signal. This can cause the computer to incorrectly compensate for a lean signal, which can result in overheating, and even misfires or engine ping.Click to see full answer. Also know, what are the symptoms of a bad coolant temperature sensor?Common symptoms of a bad engine coolant sensors are overheating, hard starting conditions, poor idle, check engine light ON and the electric fans do not work properly. The easiest way is to read the trouble code memory and check the value from the sensor, to make sure it’s a possible value.Likewise, can a bad coolant temp sensor cause no heat? Also, engine coolant temperature sensors have trouble reading air temperature. If an air pocket works it’s way around to the coolant temperature sensor, the sensor will most likely deliver a faulty reading to the engine control unit. Air pockets can cause over heating, drive-ability problems, or poor heat in the cabin. Besides, can you drive with a bad temperature sensor? Anyone with specific knowledge weigh in. Usually the Coolant Temp Sensor is used for the gauge for fuel trims for cold start enrichment, and fan control. Since the Thermostat and water pump are mechanical the engine will still cool. you will be fine driving until the replace the sensor.Does the coolant temperature sensor control the fan?The sensor works by measuring the temperature that’s being given off by the thermostat and/or the coolant itself. The temperature is then sent to the on-board control system. As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.

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