I am new to the forums but have read alot of great issues on here and in need of help. I have a 2013 JK Sahara for the last 3 months that has been having overheating issues. I have replaced the radiator, thermostat, water pump, heater core, the left head, radiator cap, flushed it several times, burped it ( I lost count) and it still runs hot after driving it about 5-7 miles on the highway. It has never been off road. Anyone had this issue ?