Hello. I have some strange problems with my 146 1.6 boxer. Several days when I'm driving, the water temperature is continously changing, as far as I could say, not depending on the driving conditions, from ~80*C to ~100*C - rises up, and after 10-15 seconds falls down. Strangely, the radiator fan does not spin at all. I haven't had these problems earlier. Is there any fuse or relay (and where is it placed?) for the fan? Any more ideas?