As i was driving the car (96 acura integra) began overheating. But as i hit the gas and start moving the temperature needle drops rapidly to its normal position. But once it was idle at a stop it would slowly go up again. But after i got home and parked. The next day i left it idling for 15-20 to see if it would over heat again and it wont. Also i checked the radiator but i cant tell if it has fluid or not. I dont think a hose ripped. What i did notice is that the fan doesnt come on, but i haven't been able to get it to overheat again. But i haven't driven it very far tho.