[CJ0717]

Re: crazy fluctuating engine temps/ low coolant
well its not exactly HOT air that blows out ever... but its been like that for at least a year.. but as far as hot then cold goes, i think the air stays warm, but im not sure yet cuz i pretty much only put it on my feet. ill check in a little bit. and do you think that these temps im reading are actually true? it seems like they go up and down wayy to quickly to be right.

and i dont recall my engine ever overheating until it started doing this, but then again im not constantly checking my gauge..well now i do at least ha.

when you say bleed the cooling system, do you mean a full cooling system flush? like by a shop?

I believe the temp sensor is telling you the truth. Got to get the air out of the coolant system first.
There should be a bleeder valve on top of the thermostat or nearby. Usually the highest point on the engine. While the car is running and warmed up (above 180F). Open the bleeder. You should get Air coming out with a little coolant. When the coolant develops to a stream of coolant only shut the bleeder. Do this repeatedly waiting a couple minutes between each bleeding cycle. (allows the air to come back to the top. Check the radiator and keep it topped off. Bleed the system with the radiator cap on. After several times you should get most of the air out.
Let it cool down and do it again to make sure. Once all the air is out you need to check if the coolant is overflowing when the rad cap is removed. Again an air bubble developing when the engine is running can only come from one place.

Let me know how you make out
CJ