I have a 1995 Nissan Pick with around 100k miles. I drove it across country...Portland, Oregon to Miami, FL, and since there has been an intermittent grinding sound. It sounds like a chain dragging on the ground and is coming from the front of the truck. I haven't noticed any patterns of when it starts happening, but it stops when I put the clutch in and brake for a little bit, when the car comes to a stop or if I hit a bump in the road just right. Every time I take it to the shop, the noise decided it doesn't what to unveil itself. Do you guys have any idea what this could be? Thanks for your help!! :)