My 2002 tbird is overheating....I added engine coolant and engine fan coolant pe on 2002 Ford Thunderbird

per instruction manual. They were both low. When I coasted the temp went back down. As I accelerated it got hot again. I only drove about a mile. Help? Stuck thermostat? How much to repair? Fist time overheated two days ago. Thermostat has stuck 4 times in the last six months but became unstuck on its own and did not over heat.

Asked by for the 2002 Ford Thunderbird