Engine temperature problem

Hi all, its been a long time since i posted...anyhow, I have a 94 camry 4 cyl XLE. Recently I noticed my temp meter not being steady. It fluctuates...esp when i drive for long and stop for a light or something. I drove her like that for 1000 miles, nothing happened. I have put in new radiator, hoses and also water pump. Still didnt fix the problem. Any piece of advice from anyone of you will be appreciated.

Did you replace the thermostat when the radiator and other parts were replaced? Does the temp. meter show it running cooler for long trips, and heating up at stop lights? Usually, the temperature meter will indicate about half way up the temperature gage, and stay there once the engine is warmed up.

Did you replace the thermostat when the radiator and other parts were replaced? Does the temp. meter show it running cooler for long trips, and heating up at stop lights? Usually, the temperature meter will indicate about half way up the temperature gage, and stay there once the engine is warmed up.

No, i dont think my thermostat was replaced when they did the radiator work. Yes, it is running cooler for long trips, but heating up at stop lights...do you think its my thermostat? Thanks for the reply.

Thermostat is likely.

No, i dont think my thermostat was replaced when they did the radiator work. Yes, it is running cooler for long trips, but heating up at stop lights...do you think its my thermostat? Thanks for the reply.

Thanks Brian