My mom has a 2006 CR-V automatic trans, when you start the engine put it
into drive and move foward about 50 ft you hear a clanking noise from the
front, it will only make this noise when the engine has been shut off,
re-started and put in drive.

After you hear the clanking noise you will not hear it again driveing in
town until you shut it off and re-start the engine.

Thanks
Tom