Electronic Fan only comes on when engine is OFF

What is your question?

I turn on car, idle, it overheats. Thermostat is new/tested. Switches are new/tested. Heat sensor works just fine and was tested. I have no A/C fan turning, no Electronic Radiator fan turning. I get no heat inside the car and I overheat ONLY when idling/not moving. This was an engine swap (H23 to F22) by previous owner. Any thoughts?