Had a look at the temp sensor, it had been unplugged!!!. It works now with a new bit of wiring and reads normal but the temp goes up to 105 deg and still no fan?. The fan works as if I unplug the ECU sensor it comes on straight away. Is there any adjustment on the fan temp?
Yes I think the fettling I did has helped, it now sits at just under 800rpm when warm I can live with that.