I started my 93 stang this morning. It was quit outside and I heard it every once in a while, while I had my hand on the stick some "chatter" or "ratteling". It did not last but more than 1-2 seconds every once in a while but I heard it. I crawled under the car like maybe the exhaust was vibrating against the underbody. But I figured out when I step on the clutch it does not happen. I just purchased the car and I know the previous person changed the clutch because it is extremely hard to step on. I get leg cramps. Nothing compared to my stock 93 Cobra, she's like butter. Is it possible to have some clutch chatter?