I have a 99 CSVT with around 65,000 miles on it. When i start the car up from cold when its been sitting overnight i get a grinding or rattle noise as the car idles down, but stops when its at normal idle. Car doesn't make the noise if the clutch is pushed in. When i put the car into first or reverse and the clutch just engages at low rpms i get that same noise. Once the car starts to go and the rpm's get above 1,500 it seems to go away. If i keep the rpm's over 1,500 and engage i don't really get the rattle. Anybody know what this might be? maybe a throw out bearing, timing chain? pressure plate? please help because i have no idea