Dmax1985

Hello, My Fusion has been having this issue where it will be ok with A/C running and engine temp is fine then out of nowhere it will start blowing outside temperature air and my temp gauge will start climbing. I have read a bunch of different info and had 2 different mechanics check it out. The first mechanic insisted on changing my water pump and thermostat which had no effect on fixing my issue. Second mechanic flushed cooling system and also installed new engine temp sensor (located on top of motor between spark plugs). Unfortunately nothing has changed except the weight of my wallet. At this point I’m thinking it’s electrical like a relay or something but at this time just trying to see if anyone has any input as to what I could check or do next so I can stop spending money on things that are not the root of my issue. Thanks in advance