I have a 2007 Nissan Sentra 2.0S and it has begun making a constant clicking noise while driving. You can't really hear it at higher speeds. But you can hear it at low speeds and can hear it whether you are turning or just going straight. I jacked the car up and turned the wheels, and can not get it to make the noise while jacked up so I know it's not a bearing. Then when I put it back down and drive it....it makes it again. My thoughts are maybe a CV Joint? I looked at all the CV boots and they are all still in tact so I am unsure if that is the case. I also notice, however I think it may have always done this, it makes a knocking sound when turning from right back to left or vise versa if I am at a stop or very low speed. Any thoughts?