Well, I'm currently flushing my cooling system and don't have the fan attached or the thermostat installed.....
Gauge was in it's normal 3:30 position....
You'd think that it would creep upward when you're stopped at a stop light and creep downward once you started moving when you don't have a fan and thermostat installed; but NO, it stayed put............
BTW, I found the original link after coming home from Bakersfield to LA. Temperature went to 3/4 mark up the hill, but stayed at normal spot afterwards. Thought it was strange that it acted normal/not normal with nothing inbetween.
BTW2, thermostat didn't fully open up, which is the cooling problem, but I figued I'd flush the system out since it's been awhile.........