You have an electric fan. It does not have a clutch or a belt. If you are sure it is your fan then more than likely the motor on the electric fan is going. You could try to spray it with WD-40 it might help if it is rusty or seizing up, but this will probably only be a temporary solution. Since it is winter you could probably get by not having a fan (if you live up north and don't sit in traffic if you live in the south were it is still warmer you will have to fix this soon if you sit in traffic alot you will also have to fix this soon.) Just try spraying it. You can also turn the blades by hand if they are hard to turn you need a new motor, but if they are easy to turn it does not necessarily mean that the motor is still good. You will probably end up needing a new fan motor (if that's the problem). It will cost you an arm and a leg from acura so i'd check ebay. You could also buy one from a junkyard but you might be getting another one that's about ready to go. How many miles does your teggie have?If you hear this every time you stop it is probably not the radiator fan. Change the alternator and power steering belts. Personally from what you said i think that it's one of those two belts and more than likely its the alternator belt. I'd start there. Once again a belt from acura will be expensive, you might want to go to advance auto, napa, autozone, or what ever you have in your part of the country.