HELP!!! 91 MR2 Turbo makes weird noises HELP!!!

my girlfriend's 91 mr2 turbo makes a boiling/bubbling sound. it only makes the sound after she turns the car off after driving it for a while. someone suggested changing the thermostat, we did that and it still makes the noise. does anyone know what might be causing this? thanks

-jon

mine does the same thing i thought it was normal for mr2s, could be wrong though, hope not

coolant/water boiling. 3sgte runs hot, pretty sure it's normal. just make sure u don't run out of coolant/water