Same thing happened to mine. The problem was, the flippers/blinds in front of the radiator were shut closed. I don't know why for put the stupid things there!!!
I have the same issue going on, I took it to Ford they told me thermostat and water pump I changed them and still same issue but I also noticed my grille shutters are stuck on closed. Could that solve the issue? Did you take them off?
Pull the engine out just to replace water pump on a 2018 Ford Explorer? What a piece of junk you can't even replace anything on that motor without pulling the motor out.
