where is the relay for radiator cooling fan located

You can find that in your owners' manual. Also you can take your car to your local Ford/Lincoln/Mercury dealership and ask the service department where it is located. And why you are having that problem. Also get your water pump replaced, because that pump helps regulate the water going into the radiator to cool it off. Also get the radiator itself looked at. This could be very pricey indeed, but it would be worth it. Also if it is going to be too much money for you to dish out on your car, then you might have to consider getting a brand new car.