Vehicle running hot?

Hello,

There are many reasons why an engine overheats.

A good article:
https://www.2carpros.com/articles/engine-overheating-or-running-hot

Does engine overheat straight after start, meaning the temperature gauge is showing hot but the engine is physically still cold?

As you have done a lot of work on the cooling system, has the system been bled properly? An air lock can cause overheating.

How to bleed cooling system:
https://youtu.be/xeTgmdRkQtY

Is the cooling system losing coolant?
If yes, then the next step would be to pressure test the cooling system and check for external leaks.

How to:
https://www.2carpros.com/articles/radiator-pressure-test

Also check the thermostat:
https://www.2carpros.com/articles/how-an-engine-thermostat-works

It might be possible that the engine has a leaking head gasket:
https://www.2carpros.com/articles/recognizing-the-symptoms-understanding-a-blown-head-gasket-in-your-vehicle

Suggest carrying out a combustion leak test.

How to:
https://www.2carpros.com/articles/head-gasket-blown-test

I know there are many possible issues, but overheating can be caused by these and more.

Cheers, Boris