It just remains off the bottom of the scale, just like when ignition is off.

Thanks for the advice, no I don't have the coolant alarm :-/ (will look into it though) but I was just concerned that there could be another issue why the gauge doesn't work!

I have noticed that the temp gauge does not move at all on my 2.0, should I be worried or could this just be a temp sender faulty, could anyone advise where the sender is located, so I can test.

Thanks