My experience with 190D9 is (over'n over) is as follows:
1 - Your radiator is pinged (Well, the aircraft is pinged anywhere and the radiator gets damaged).
2 - You have 10 or 15 secs with engine working right, temp not over increasing even with WEP ON.
3 - Then the temp will raise at a constant speed, no matter MAN/RPM settings and the engine will die in 2 secs. You can stop the engine, but once started again, the temperature will raise again at the same speed.