How do you change thermostat on a 1993 acura legend?

Car is a 1993 Legend L. New radiator, but before heat comes out of vents the temp needle goes all the way to Hot and then the Tstat opens and heat bellows from the vents. Heat is maintained unless I come to a stop in which case the needle goes back up to Hot and the tstat opens again.

Is this a basic bad tstat problem?How do you change thermostat on a 1993 acura legend?
i own a repair shop,and yes it could be a bad thermostat,,and also a bad cooling fan causing some of this to happen but he thermostat is located in the housing at the end of the top of the radiator hose on it,,there's a housing there ,and its behind that housing,,you,ll have to drain some of the coolant out of it or it will gush out on you ,,then remove the housing ,and clean off all the old gasket,and replace the thermostat ,don't over tighten the bolts up on these ,,the brake the housings real easy,,re-fill the system and that should be it,,start it,and make sure there are no leaks in it,,good luck,i hope this help,sHow do you change thermostat on a 1993 acura legend?
it could be a bad thermostat or it could be that your fan isnt working.also flush out the cooling system.
Find out if your coolant is full. If you have a leak somewhere then air pockets form and tend to get trapped espically in the heater core. If it is full then you could replace the t-stat with a high probability of success.