Yep, 31 degrees is rediculous. But that's how it goes out here.
Too bad the part isn't smart enough to shut itself off after the engine gets warm, because it really runs better without it. Wait a sec, someone mentioned a switch . . . yes, I'm getting an idea here. Make a driver-controlled switch for the thing, take out the CEL bulb in the dash, and there you go.
Not to spin off topic or anything, but there used to be talk of an electric radiator fan that did away with the power robbing clutch. I think someone once said you could get 10 more horsepower from this mod. Is this worth looking into?