Ok, so was idleing the Jeep for A/C on a hot day, and was watching the gauge, nothing. Stayed right above 210 where it normally is. The I turned her off went inside, and when I came out to start her, she was missing like all hell and backfired a few times, wayyy rich. In that second the coolant gauge pegged. I immediately turned her off. I then cycled the ignition and the coolant gauge was right back to normal so I tired to start her, again with the missing. Killed the engine and plugged in my code reader, lo and behold ECT of 250 ahhh! I recently replaced the coolant temp sensor (one on the top of the engine) and when popping the hood the radiator is HOT. Even by jeep standards. While I sit here letting her cool down, I’m wondering what happened and why didint my dash inform me sooner? Ideas?