thanks to all for help info,,,,,wondering how you got the 240-250 degrees at 3/4 mark reading,. a guy i know said hhe figured it needed flushing as it was probably stoping up at bottom of radiator.........however when i was flushing i noticed a fan front of the air condition radaitor and i wonder if is bad or the thermostat for it is,,i turned on air and fan didn't run,,unsure if it is cooling fan for cooling system or just for air condition. anyone know?