4.0L Engine: The Cylinder Head Temperature (CHT) sensor is a silicon temperature sensing device measuring the temperature of the coolant flowing around the sensor located in the front lower part of the right hand cylinder head.
6.0L Engine with 4L8OE transmission: The Coolant Temperature Sensor (CTS) is located on the right side of the intake manifold, below the throttle body.
6.0L Engine with 4L60E transmission: The Coolant Temperature Sensor (CTS) is located in the upper radiator hose connection on the intake manifold.