Just a little update. Been driving a little bit more now and noticed that the temperature came up quickly (normal time period) but only to about 80C. Drove on the motorway from B'ham to London only to find the temperature is mostly sitting at 80C and sometimes going up to 85C. Never at 90C. When I am totally driving the beans off the car with loads of boost does it get to 90, but then soon comes down and settles at 80 again.
So the question is, is this £7 sensor just not calibrated right? Is the radiator the Indy fitted 6 months ago not doing its job correctly? Should I get a VW sensor for £30 and try that?
VCDS is not throwing any errors at all. Is there anything I can log to get to the bottom of this. I want my temp back at 90C please and to stay there!