so today my truck started to get real hot 215* per scangauge so i adjusted the fan so it actually ran!! didnt know the knob was turned the wrong way

also cut out a tiny slot out of my lower air dam which I hope will help the slot is only about 1/2 inch tall by 12 inches long right above the license plate. anyone know the optimal temp to try to run in a tacoma or small 4 cyl truck like mine??