Bit of an odd one here basically my temp gauge goes up to well basically the red line then the fans kick in and cool it down to 90 then the same will happen over and over, I have no heating in the car not even when the temp gets up, the top rad hose is hot but the bottom is stone cold when I let the cap off the expansion tank water will come out over the top of it I have changed the temp sensor and the thermo stat there is no trace of water in the oil or the other way around a full coolant change was done yest when it first happened.
What do people think I have been reading about head gaskets which I no is a lot of money and water pumps which I don't know when it was last done but got told by last owner was in 2012.
Help me please
Oh it's a gt tdi pd130 asz
Thanks
Ray
