Check cold start injector system - be sure it is working, don't just replace parts.

And electrically test temperature sensors at the other end of the wiring from the sensors - be sure there is no problem with the wiring or the sensors and that the sensors are giving the correct readings for what the engine temperature is. (Use a separate thermometer to determine engine temperature.) Be sure those are the correct temperature sensors.

And check/replace the radiator cooling system mechanical thermostat. Be sure it is opening when it should.

Be sure electric fans (if you have those for the radiator) are working when they should. And/or mechanical fan clutch is working properly if you have that.

Overheating can also be due to a clogged radiator (replace) and/or wrong temperature indication on your instrument temperature gauge [due to wrong or faulty temperature sensor]. Verify with another thermometer the actual temperature of the engine.