I have a 91 Integra with a B18B1 in it. Recently I hit something and cracked the oil pan. While it was in the garage just sitting there and off, the fan just kicked on. I have it wired so it is always on if the engine is running, but have never heard it turn on without the car on. It drained the battery obviously. Well I went and jump started it and let it run for like an hour and when I turn it off the fan still stays on. I even unplugged the fan when I shut off the car and something is draining the battery. Any ideas?

 

just to add to this, it has a brand new alternator, so I know its charging, and a brand new battery.

 

any ideas?