So last night, while my car was idling for a bit in my grandmas driveway, I noticed some steam coming from under the hood... Shut the car off, coolant surge tank is spilling over and out... WTF. Fill it with water, drive 1/8th mile home with heater on full blast for good measure and park it. did some testing today, tested antifreeze for tempature protection... I thought maybe it was boiling... its good for 222*. so thats fine. Felt the radiator hoses (not sure if I grabbed the right ones) grabbed the big ass one on the water pump, pretty hot... grabbed the little one on the bottom of the radiator... outside tempature. My coolant tank starts to overflow right at about 210*. Sound like a stuck t-stat?