I would suggest waiting to check the thermostat - purging the system after everything is back together can be a royal PITA.
It still sounds a lot like a wiring problem to me. And, IMNSHO, checking wiring is a lot easier than purging a cooling system.
The AC thing has me scratching my head. I'd check the fuel sensors wiring (and then thermostat, if needed*) and see if fixing that problem doesn't magically fix the AC.
Edit: Actually, I'd check the temp sensor and wiring before checking the 'stat. YMMV
Last edited by SouthArk370Z; 06-22-2016 at 01:11 PM.
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