it is the 2 wire sensor next to the thermostat housing.(the thing the upper radiatorhose hooks to)
IN THE WATER JACKET.
On the coolant overflow bottle that in on the passenger side of the engine.
What type of coolant sensor? The below answer is for the coolant LEVEL sensor. The coolant TEMPERATURE sensor on my vehicle is located just next to the thermostat housing. On the front top center area of the engine just behind the radiator. Follow the coolant hoses if you have trouble. On my 1995 Jeep Grand Cherokee the sensor is located on the top of the plastic coolant reservoir tank. Look for a small (2-wire?) electrical connector.
Under hood, center, upper engine area, mounted in driver side of water outlet
The coolant temperature sensor on a 2001 Jeep Cherokee is located in the intake manifold. It monitors the flow and temperature of coolant through the engine.
Low coolant or bad sensor
replace the sensor.
The computer is not seeing a voltage drop across the coolant sensor. You could have a bad sensor, broken wiring, or a bad computer.
It is the two wire sensor next to the thermostat housing.
sensor is in the plastic reserve on the float.
You can not. The crankshaft position sensor is required to run the engine.
if you are referring to the engine coolant level sensor located in the top of the engine coolant reservior (usually gives the message "coolant sensor bad" in the VIC when it is bad), it can be easily "popped" out of the bottle with no tools necessary and a new one "popped" back in its place. **mine is a V8 model this should hold true for the I6 as well