Coolant Temperature Sensor
Yes, there is a fuse for this. It should be labeled INST.
The 2002 Pontiac Grand Prix SE has a normal operating temperature due to the engine. This is usually around 230 degrees.
Approx. 210
Temperature gauge not moved and the fan's always are working
There is 2 coolant sensors. 1 is for the temperature gauge and the other is for the computer to tell it what fuel mixture is needed.
Check the temperature sensor
195 degrees
check the power to gauge and the temperature sensor (tps). if no power broken wire or short to ground. if power to both areas bad gauge.
drop the gas tank and change the sending unit
Mine runs around 200-220...
200-215