[93buicklesabrelmtd]

I am almost certain the noise is coming from the bottom of the car now.
Is the crank on the bottom of the drive belt supposed to vibrate some? It seems to be vibrating sometimes, diffentately more than the other pulleys it looks like. But all pulleys seem to have some little vibration.
My S-belt also has little strains of thread starting to come loose on the edges, very small. on both edges. But otherwise the belt is in great condition. Was replaced not to long ago.