After driving steady for an hour, when I pull in line behind somebody - drive thru, my car sometimes starts to overheats. The temp gauge indicators rises alomost to the red. I turn the heat on and put the fan on high and within 60 seconds, the guage returns to normal. The thermostat and housing was just changed and the same thing happened again. There are no check engine indicators on.
Car overheats intermittently on 2004 Ford Focus
Check to see if your engine cooling fan motor is turning the fan.