Quote Originally Posted by Gian Paulo View Post
Also to add, Which affect most in terms of A/C operation which affect FC, Is it the thermostat or the Fan at its max.?
it's the thermostat, po. it turns the compressor on and off. in the olden days, we all have experienced the engine rpm dropping when the compressor turns on. fortunately, the idle-up mechanism today, ups the rpm, making the drop almost non-existent.
i read before, that aircon compressors eat up 5-10% of a typical car engine's power.