I drive a 94 ls sedan and it's been making a noise sounding like a whinning noise, like something needs oil. It sounded like i needed new brake pads, but when I took it to a shop, they said the brake pads were fine. The noise comes and goes so the mechanics couldn't hear the noise and figure what is going on. When i turn to the steering wheel slightly to the right, the noise stops but when i turn it to the left, the noise is still there. Anyone have any idea or a clue what it could be?