it mustve been a lot of carbon then!!!
Well, so far both our cars are issue free after the throttle body clean up
I had about 10K miles when the problem started, carlitos i think 20K (not really sure, but ill let him chime in if that wasnt his mileage). From what the dealer told me, they recommended to do the TB clean up once a year.
Good to hear you also did this, hoping this finally solves your issue since i know youve had this problem for a while. Keep us updated with results my friend!!!