Yeah it measures coolant temp. It is the two wire sensor that is under the distributor on the heads of most Honda's. Tells the ecu when the car is at operating temp. It is a thermistor.
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Don't bother giving me "rep", I won't return it and I think it is stupid.
Gracie Barra Clearwater
Gyms in Clearwater, St. Pete and Port Richey
pm me if you are interested in trying a free class at any of the gyms.