Hi can anyone help my 98 punto gt she goes up to 3/4 before the fan comes in if it comes in at all. I have no water leaks and not losing any water. Couldn't find were to bleed water system from. Wen it gets to 3/4 temp the water in header tank rise's and over flows. This morning for the 1st time the heaters went from very hot to warm and back to hot again. The over heating started on Saturday. Thx

You might try a new thermostat. OE ones are by a long way the safest bet.

had similar on mine but it isnt a gt its a 55, radiator fan would come on when temp gauge would be at 3/4, i replaced radiator sensor and it now turns on when temp gauge goes a little over middle

Thx will both them at the weekend. Hopefully works.