I have a 1998 honda prelude.
Every time i rev the car up and let the rpms go back down the car either shuts off or rpms go really really low and it almost turns off.
It also does it while i'm driving.
It doesn't do it as much when the car is at normal operating temp but when its cold it does it alot.
I think the cat could be clogged up but i have no clue.