Hey guys,
Recently I have noticed that my fan comes on after shutting off the car.

It happens on occasion and not everytime the car is shutoff. I filled the coolant about two months ago, as it was completely empty. The car doesn't seem to overheat, at least according to the temp gauge, so I'm not sure what else to do or look for. If anyone has any idea's or solutions please let me know. Thanks!

This is for a '93 Prelude vtec btw.