Reason it runs hot is?

Is this a test? What common parts did you replace? When does it overheat? Idle or driving down the road?

Not a test. Lol I just found a leak and replaced the overflow tank. Currently purging the system. Will run it first to see if that solved the issue. I'm guess is that it won't ,so, my question is: Is there anything outside of the cooling system(electronic,sensors maybe) that would cause it to overheat?