automatic cars???

anyone know anything about these??

when i switch from PARK to DRIVE or REVERSE, the car does a little shudder or lurch forward or backward, but then is fine. Although it did stall today when going into reverse.
It also idles at quite high revs

anyone any idea??

sounds like the clutch needs tightening, but im guessing really??everything else is fine and smooth

any mechanics out there who know what this may be???

cheers