Yes the aux fan is cutting in and after a while goes back off.
Yea, everytime I speed up the gauge would go up in less than one min but as soon as I slow down let say to about 40-60 mph it would go back to normal (halfway).
Why would you say it's the waterpump? It brand new but at the same time it could be faulty. But I could see the difference in temp on the top and bottom hoses, well that would be the rad.
I read something about drilling a 3mm hole in the waterpump, do you think thats a good idea?