overheating

Hey all, I have a 2005 Jeep Grand Cherokee 5.7 limited. Its got about 125,000 miles on it. About 2 months ago I had a sudden overheating issue which turned out to be a leak in the water pump. I replaced the pump and it ran fine for a couple weeks. Recently it started overheating again. No leaks...

So I replaced the radiator and thermostat on my 07 jk. Burp the system & still overheating. The top radiator hose & the 2 coming from the heater core are all hot. Only the lower hose is cool to the touch after jeep has been running. I was thinking maybe my water pump but not sure how to tell...

After I installed a new radiator in my 1998 Cherokee 4L I blew the head. It sat up for about 10 months. I installed a rebuilt head, changed out the thermostat and radiator cap, and had the radiator flushed out. The engine runs for awhile at 210 or just above it for a few miles and then sky...