A whining sound from my 1999 Ford Mustang?

I have a 99' Ford Mustang, automatic. Originally belonging to my sister, the car was handed down to me. For what I can remember it never made this sound when my sister had it. So the problem here is whenever I brake completely, and then let off the brake to accelerate, it makes this whining noise, and it seems to get louder and make noise more frequently when the weather gets cold. It also whines when I turn my steering wheel to the right after letting off my brake a bit. I've had it checked before, and so far they say they can't find anything wrong. Any ideas? It would be greatly appreciated.

A whining sound, your Mustang must be a Democrat.

Actually it sounds like it could be wheel bearings that need grease.

Hi so why do you think you got it as it has a major issue which means it's worth nothing in actual fact. So it will need some serious money spending on it.