flexplate sounds reasonable i dont have any gears and never had and engine issues before this happened.
Realy gas it till it stops ofcourse in park itll only go to 3800rpm or so
car was accidently nuetral dropped and then wouldnt move any more. then next day notice this engine noise which ofcourse can be any of the above issues
lovely trans shop said nothing came up on trans scan but i obvouisly have some issue.. they say engine bad trans bad lol hope not