A day of fail basically. I went to fit the thermostat and failed because the bottom bolt is such a pain in the ass to get to. I think I need to either a) get a decent 1/4" socket set to get in there or b) get a garage to do it and pay through the nose.
It seems my battery was on the way out too as its finally died. I went to start the car and it just clicked. Took the battery out, tried to charge it and it didn't really take a charge (the charger is meant to take 12 hours or something and it said fully charged in 1). The indicator that is usually green on batteries was not even lit up and the multimeter said it had 0.0 volts. Dead.
Does this car ever stop costing money haha :)
I did clean the IAT sensor (it was covered in oil glaze) but won't know what difference it made till I get a battery now :(