It should range between 180-210 F for normal operating temperature.
It should range between 180-210 F for normal operating temperature.
It is next to the thermostat housing.
Between the alt and ac comp, next to the thermostat housing.
temp senser or spark coil
It is the two wire sensor near the thermostat housing.
in right front side of intake manifold just under brace rod.
190-210
It is next to the thermostat housing.
Check the thermostut at first.  Your stut temp is too low. 
If the temperature gauge is reading below normal operating temp after driving a little while it may be that your thermostat is stuck open. I replaced my thermostat and it fixed mine.
It means that the circuit is open that goes to the temp sensor by the grill. Either the wires are broke or the sensor is bad.
I believe it is mounted to the bottom mounting screw of the driver side headlight. There is also one in the resonator box for the exhaust temp. At least, that is where they are on my 2004 Ram 1500 Hemi.
Start with checking the fuses.