Automatic transmission. When I drop it into reverse the engine just revs as if it were in neutral. Park and drive are just fine, drove it 50 miles to home after the security guard pushed me out of the parking space. I've got two different mechanics saying I need a new transmission, but a guest staying at my inn says it might just need a reverse pin adjustment. Can anyone explain what this is to me? Or has anyone else out there had this problem? Thanks! Nicole