QUOTE (fgvillegas @ Jun 15, 2010 - 12:31 AM)
i experience whrring noise before it end up to be my wheel bearings.
but since you hear the noise during idle, it could be bearings from the pulleys (i.e., alternator pulley, crank pulley, etc.)
do you hear the sound while accelerating?
I don't think it'd be the pulleys b/c when I accelerate it stays constant until about 3,000rpm then it disappears. It's a very low, metallic whirring noise, you'd have to drive my car for as long as I have to even notice the difference.