What is the normal temp of a 2001 Pontiac grand prix se suppose to be? N with ac running?

Temp gauge should be no higher then 150 degrees .. Never use plain water in your radiator ,always use a top brand Anti -Freeze such as Prestone !!

My thermostat, GM 50/50 Coolant, Radiator Hoses have been changed by GM Technician and the temperature did read just about halfway between the 2-3 marker, although now after being done, the reading is right at the middle or on the 3 marker and when idle in park it slowly rises. This has never occurred - why after this... ?

The temp of the thermostat when it was replaced was 195 degrees, and it was replaced with the same. That is why I cannot understand why the gauge read higher than before. I will check and see if possibly the fins on the Condenser and radiator are clogged with debris, however it operated fine before, so I have doubt that is the problem. If it loses coolant what would cause that ? I have not filled it with coolant as of yet. Would the water pump not operate normal and leaks be inside the pump. There is no water/oil mix so the head casket is not the problem.

I got a 2001 Pontiac Grand Prix it usually runs at the temperature of that 100 that 180 but I start freaking out when it gets anywhere near 210 and the only reason I'm doing this is if I turn on the air conditioner something you know I run good and that I was so just start eating up so I have to put it back on heater and run the heater on on the front defrost and then it goes back down to about a hundred and ninety-five 280 again but here now I just flushed it out clean the coolant and now it seems to be staying at around 2:10 is this a good or a bad thing

Okay I have a 2001 Pontiac Grand Prix what it does is I usually run at a normal temperature of 180 every once while it will go up to 2:10 and when it starts getting up to 10 I throw on my heater to make it come back down what seems to be my problem I just now flushed out the radiator and putting new coolant 50/50 and some reason it's now staying higher since I've done that so what seems to be the problem with that

Check the fluid level when cold b removing the radiator cap and then running the engine

After the engine is running for a minute check the level again and while the bleeder valve is open. Once the fluid is no longer going down replace the radiator cap and close the bleeder valve. Run the motor for another couple of minutes and open the bleeder valve and listen for a hissing sound of air, and if there is no hissing sound and there is a visible amount of coolant coming out of the bleeder, close the valve. This should solve your problem. You may need a scan tool to determine the actual temperature.

After the engine is running for a minute check the level again and while the bleeder valve is open. Once the fluid is no longer going down replace the radiator cap and close the bleeder valve. Run the motor for another couple of minutes and open the bleeder valve and listen for a hissing sound of air, and if there is no hissing sound and there is a visible amount of coolant coming out of the bleeder, close the valve. This should solve your problem. You may need a scan tool to determine the actual temperature.

Non of you guys know. Change the coolant temperature sensor. Its hard to install. You pretty much have to break the front plastic to get the basic wrench to fit and then boom. You car is fixed no boiling water and get a 180 thermostat if you one of those guys. Mine is close to boiling to boiling point but it stays there. This is my their grandprix with 300 thousand miles.