I have recently replaced my coolant sensor because it was litterally broken in half. My vehicle is still not acting right and when I got the code it showed coolant temperature voltage too high. I was thinking it could be the wire leads going into the sensor itself. Any suggestions.
Coolant Sensor on 1992 Chevrolet S10
If the wire or connector to the sensor is broken or high resistance, it would show sensor voltage high. Check the connector and wiring back to the controller. Also check that the sensor has some continuity with resistance to be sure that the sensor is OK.
There is a connector replacement for this Coolant Sensor that has yellow and black wires. Did you get a new one, because these connectors and wiring pigtails have a history of problems.