and the other day is started overheating when she was driving home and the battery light came on and then the tempeture guage just went up to hi it has plenty of antifreeze i checked she shut it off for like five mins and then she turned it back on it was just fine then she started drivin for about a mile or mile 1/2 and it the tempeture guage went back up to hi the oil is good and plentiful the anti freeze is full my guess is it needs a new thermostat for the radiator i think its just old its never been changed and maybe its just getting stuck or sumething i need you guys feedback asap..