What should the coolant temperature be on a cadillac deville?

While the idle temperature of the car doesnt matter, the standard or average operating temperature of the coolant going into a Cadillac DeVille should always be steadily between 160 and 190 degrees Fahrenheit. If, for instance, the liquid happens to run hotter than 190 degrees F, its most likely that there is an internal problem in the cars cooling system. In rare cases, the temperature sensor itself may be at fault, making it impossible to gauge the correct temperature. In these situations, replacing the sensor is key, as a car whose coolant is exceeding the 190F temperature limit is likely to run into potentially dangerous problems in the long run.