If you mean for Coolant level sensor it is on the bottom of the plastic coolant dish on the passenger side of the car.
The coolant temp sensor is located next to the thermostat housing.
I have 1993 Volvo 960 and the coolant senor is located on the back of the block ( next to fire wall) The access is very difficult because the are two water hoses and some electrical wires right next to it.
It is located on the coolant reservoir. This part cost $70.00
It is located in the bottom of coolant bottle.
It is the two wire sensor next to the thermostat housing.
It is located under the coolant reservoir. You can't just replace the sensor. The whole coolant reservoir must be replace. It's a simply 10 minute job.
In the thermostat housing
The coolant temperature sensor on a 1997 Tacoma is located on the front of the engine. To find it follow the upper radiator hose to where it enters the engine. The sensor will be place near it.
The coolant temperature sensor on a 1997 Lincoln Continental is located on top of the engine, near the upper radiator hose. It constantly relays the engine's temperature to the computer.
the engine coolant temperature senson is located just below the throttle body on the front of the engine
center drivers
The 1997 Ford Explorer ambient temperature sensor can be found on the bottom of the drivers side mirror. The engine coolant temperature sensor can be found on the front of the engine.