Radiator is 1 1/4" from rock auto, tried to find 1 1/2" to no avail, Trans fluid is full (checked a few times) and I've gone through a few clutch fans and all had same result. New one with new design does sound like a jet taking off, when I stand in front of the VX I can feel the air being pulled in (of course not when it's moving )...I'll check the Freon next