I have a 2001 2.7l with a 5 speed. It just developed this noise over the past few weeks that I'm interested to solve. When I'm in nuetral and let out the clutch, I hear a soft whine, sort of sound. It stops as soon as I push the clutch back in. The clutch still acts fine without any slipping when in gear. Any ideas? Any tests to do? Thanks for your help again!