you can also read live temp from ECU if you have access to VCDS (compare the temperature from dash with temperature value in ECU - up to 70 degrees they should agree fairly closely.
multimeter is only 5£ in any diy store thou
If I don't have a multimeter then I definitely don't have access to VCSDS
(whatever that is haha)
I'll go to the garage round the corner from me tomorrow and ask him if he can test the sensor and about the slow rising temp gauge and no hot air, which I'm guessing is related to the thermostat as you said in my other thread.
When I stop cycling the ignition in the next few days I will know if that has stopped the extended crank issue or not. At least then when I take it to the garage they will have something to work with, one garage has already mentioned that it could be the FPR as well.