A thermistor is a resistor that changes value according to temperature. They are often used as temperature sensors. We'll use the coolant temperature sensor from a '98 Chevy truck for an example of a thermistor type sensor. This sensor is for the temperature gauge operation. Room temperature is about 80F and we have a chart of rough resistances at various temperatures.
The resistance of the sensor falls within range.
We should see a change if we heat it up to around 100F.
Or cool it down to around 30F.
So that is how a thermistor type sensor works!
Thanks for reading
kenny@ggauto.repair
G&G Auto Repair
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