The other day i was driving down the road and when i pushed the clutch in to start slowing down for a red light it just died. I didn't think much of it and just popped the clutch while i was still rolling to start it again then i would drive down the road and sometimes it's fine and other times it just dies. It runs fine and i haven't had any problems with it, but when i push the clutch in the rpms start to drop as normal then it doesn't stop at idle. Does anybody know what it could be?