it is a fast clicking sorda sounds like something is spining its from the tranny area.when i accelerated fast out it went from steadly raising in rpm to like it was in neutral thats when the sound began making the sound.. afterwrds i got a new clutch installed it it did the same thing so i figured it was the tranny so i got another and it still dose the same thing. like i said it dosent make noise when my foot is on the clutch but as soon as i take my foot off it begens to make the noise..also the car wont cut off if i let my foot off the clutch while in first gear