Hey scotty, question, i just bought a 2018 jeep wrangler sport unlimited automatic. i took it on a dirt trail with mud and sand a week ago, and now im hearing a mid pitched whine when the engine is in 2nd gear going at 1800-2500 rpm into 3rd, the sound stoped at high gear regardless of rpm or speed. did not do any water crossing, no mud pits, or rock crawling. but did saw some sand and dried dirt around my engine bay. Could it be the sand got on to the belt? Or is this something else?