Okay, got series 2 and when done milage she overheating and water bubbling out of header tank when turned off. Replaced header cap, still no good. Then used hosepipe to run water through pipes by taking pipe off top of thermo unit. Seemed okay for half a day then same thing happened. Replaced thermostat and still the same. Someone told me it might be head gasket and to drive it without going on boost and see if same thing happens-it does!!!
fan aint coming on unless i put me headlights on , pmsl!! any ideas? Deano was gonna post on PJ's forum but u answered todays questions already.

cheers guys