I'm not sure if that's exactly true though. Had an overheating issue a couple weeks ago, which turned out to be a bad connector at the fan, causing it not to come on, and the relay I recently put in was fine. While the engine was OFF, and no key in the igintion, I wiggled the wires, and the fan came on, which shouldn't be possible to do from my understanding. Of course I questioned what the hell was going on when getting the connector fixed. (and I'm since working on putting in a permanent override switch just in case that won't backfeed into the system). Supposedly, if the temperature is too high and above a certain point, the fan will run longer while the vehicle is off to bring the temperature down to normal operating temp and will turn itself off after a predetermined condition is met. Interesting as it's the first I've ever heard this, but then again, when I overheated before, like many run into, it's the relay so it's not possible for the fan to do this.
System was checked with a DRBIII scanner, and no other issues, so can not see any other probably explaination why the fan would out of the blue keep on running with everything off. First thought was something was short circuiting, but all is fine.
As for the relay, I refuse to pay dealer prices which are worse up here. I always have a few on hand I have from my trips to the wreckers, and it's surprising how many virtually new ones you can actually come across.
The beatings will continue until attitudes improve!
HID Quad bi-xenon + foglight retrofit