Where coolant temperature sensor is located on engine on 1995 Toyota tercel And how to replace?

Well, honey, the coolant temperature sensor on a 1995 Toyota Tercel is usually located near the thermostat housing or on the cylinder head. To replace it, first, make sure the engine is cool, then disconnect the electrical connector, unscrew the sensor using a wrench, apply some thread sealant on the new sensor, and install it in the same location. Don't forget to reconnect the electrical connector and refill the coolant if needed. Good luck, darling!