my 96 xj was running around 240 so i decided to change the t-stat. after i changed that my water pump took a crap so i changed that. after i changed the w/p the temp would heat up to 260 and shut the engine down. i had aa air pocket. after i burped it the temp was at a steady 210 right where it should be. and now its running at 240 again i dont know what else could be wrong. and both my fans are working

 

bump

 

Maybe a leak in the system. Try burping the system again.

 

well i know for a fact that fealing,and did the same steps you did,i even changed the radiator,and turns out it was the temp,sending unit,it was my gauge that was reading to high not tha my temp was high,you should give it a try,save your self some cash and headache's.