Alright. New radiator in, the Jeep, same problem. Overheats when not moving. Electric fan is pulling air, air is hot coming from the radiator.
For some reason, it appears to not be pulling the coolant back into the radiator from the overflow bottle, but it is opening and filling it completely until it drains out. New radiator cap as well. New thermostat. Water pump. Sensor. Etc. only thing I haven’t touched is the heat core, which I don’t think is the problem. As soon as it spikes, the AC kicks off, the heater turns on and it heats up QUICK. This also lets it drop the water temp quite a bit. No water in oil, no oil in coolant. Compression and leak down tests come back right down middle of the factory specs.
Flushed the block twice now. No change