My radiator fan on my 1985 Buick Century with the 3.0L v6 doesn''t work so I got a new motor but have yet to install it. Is the fan motor going out a common problem or could it be something else? I have the old motor out but haven''t put the new one in yet. Is there a way I can test the old motor? Or if I were to simply plug in the new motor without the fan, should it turn on if I started the car?