so last night it was raning really bad (i donno if thats why this happend)... but this morning i went out to my car and it sounded like the fan was runing...i was like what the hell?? ...
so the car was dead......i opend the hood unpluged the fans and got a jump...im runing a jumper wire for that sensor on the back of the motor..but iv had that setup for over a year on my old car (same ecu and motor) and never had this problem...
the fan runs when the car is off...key out ...nothing on ..is it just the relay?

 

Could be that, or, I have known people with cars with a fan that turns off and itermittently turns off after the key is pulled out. This was happening because she had the wrong fuse in. Also, the fan in my car sometimes stayed on for a long time when I needed coolant and the motor was above running temp.
Aaron