2006 mustang gt trans rattle

[Kirk]

Ok guys I got an o6 mustang gt 4.6 3v 5 speed manual. I replaced clutch drained all brake fluid put back new. When cold start car I can ease off clutch and it will roll out into first gear, after running temp up on Mt hour drive if I stop and try to ease out of it it rattles and shakes like it's gonna stall out but if I get it up to 1500 -2k no noise. Only happens on take off. The car has 127k miles checked flywheel didn't see anything noticeable why under it any ideas would be greatly appreciated.

 

[Midlife Crises]

Did you install a new flywheel?

 

[Kirk]

No I've got one. You think that might be it?

 

[moooosestang]

When you cold start the engine is revving up to 1500-2000. Is the clutch broken in yet? It can take 500 miles or more before a clutch is fully broken in and stops chattering. You didn't replace the flywheel or have it resurfaced?

 

[Midlife Crises]

No I've got one. You think that might be it?

It is common practice to have your original flywheel resurfaced or replace the flywheel with a new one when installing a new clutch and pressure plate. A new pilot bearing is often a good idea and of coarse the throwout unit should be new as well. Reusing the flywheel without having it machined will often lead to clutch chatter and a grabby engagement.