I'm driving along, and suddenly I hear a knocking kind of noise, on the driver's side. It only happens every now and then, and lasts about 5 seconds. My clutch has been acting up on me lately, maybe there's something loose? Hopefully it's nothing too serious. If any of you might have an idea of what it might be, let me know. Also, when I have my car in 5th, it seems to make this rattling noise when I step on it in 5th... ? I'm praying there's nothing serious, but it might be something to do with the transmission that's causing all of this... 
