NTC thermistors for car coolant are installed in engine cylinder block’s water jackets or the coolant pipelines. Signals can be transmitted to ECU (Electrical Control Unit), which determines the fuel injection and ignition timing for better combustion efficiency and lower emission. If the NTC thermistors break down, factors above will be interfered.
NTC thermistors, the term NTC stands for “Negative Temperature Coefficient”. It is a resistor with a negative temperature coefficient which means the resistance will be decreased once the temperature increases. NTC thermistors for car coolant are potted into a stainless steel ring lug probe, which can be fixed to engine cylinder block’s water jackets or the coolant pipelines, in order to detect or control the temperature.