i need to know why my vtr is making a squeeling noise?

passenger side front from the wheel area is a squeeling noise,,,it comes and goes but is annoying. it has nothing to do with the clutch wen i push the pedal down and up. but happens more at slower speed. it sounds like a squealing noise. ive checked the shaft, ive checked the pads to see if they are low,,,cant find anything. what is you theory?