Engine hesitates and sometimes shuts off at running temperature?

Cold start to idle to driving around for a while my car ran fine besides the odometer tripping in and out. When that does it trips my RPMs in and out and hesitates. I have replaced my corroded fuses in the box (all of them) for possibly a better connection. It's only been a day since then and the dash lights seemed to be better even through bumps. Did a thermostat and when it gets to running temperature and fan comes on the charging system feels as if it draws so much from everything and makes the car either hesitant all the way home or once foot off throttle it shuts completely off. Unplugged fan same issues. Before and after the thermo it has hesitated the same just worse since there's better water flow.

I have changed spark plugs, oil, thermo and coolant (for heater in cab issues) so far but hardly can't drive anywhere after the thermo and coolant change once at running temperature. While changing thermo I cleaned the throttle body and IAC sensor (pretty dirty). Ran longer without circulation of water. Not good with electronics and relays but could use some pointers.