overheating st Options

[Malhar95]

i recently noticed, that my gauge reads hot sometimes and then drops quickly, first time it did that i checked the coolant, was a little low added water,

and then it does it randomly, coolants level is good. however when i turn the blower on (with temp to hot and AC button on) the needle comes down.


i also noticed the first day, that its leaking from where the bottom radiator hose connects to the engine, above the transmission area.
but yesterday when i was filling up gas, (it wasnt over heating or anything, i just checked) i saw its not leaking from there, but its quit wet under the coolant reservior and it was bubbling.

im guessing its the thermostat, but any input from you guys? how do i diagnose a thermostat, other than taking it out and puting it in a hot pan?

[Malhar95]

for whoever cares:

i ended up replacing the radiator and thermostat. and when i had everything apart, i honestly think it was just the thermostat 'cause it looked to be a little opened, but when i put it in boiling water i didnt see any movement.

since i already had the old rad out i just replaced that too.

cars running so far good, but havent gone for a long drive but 16 miles everythings good.

thanks everyone for the input and suggestions