I installed a new act clutch and throwout bearing when I started the car I let out on the clutch and there was a loud rattling noise, when I pushed the clutch in it stoped. does anyone know what could cause this?

 

Did you resurface/replace the flywheel?

 

sounds like a throwout bearing noise.

 

I resurfaced the flywheel, it was making a rattling noise just like this one before I changed the clutch, when I took the old stuff out and looked at it the bearing was shot and the clutch itself was down to the end so I figured that would solve my problem but tonight when I started her up it made a noise just like it was doin before, I dont know what it could be...

 

do the gears rotate in the trany when the car is idling?