thermostat locked up. My old bronco did the same thing. Once it locked up the water pump built to much pressure and cracked the radiator.
If its worth doing its worth over doing
2014 Ram 2500 CTD CCSB Tow rig.
2005 Tj Rubi - Banks exhaust, Full poison spider cage, Custom front bumper, Swag offroad rear bumper, Edge intake, 20" Black box logistics LED bar, Led tails, and KC headlights.