Idles Low sometimes dies feels bogged down

My 1994 plymouth Sundance duster recently started having problems. It has a 3.0Liter V6. Recently we had a big rain shower while I was driving and had to drive through a big puddle on the reoad that was deeper than it appeared and my car slowed way down going through it and then seemed fine right after. But, a couple blocks later when I when to shift gears the rpms dropped to ~400 rpms way lower than usual and almost died. When I stop the car rpms dropped way low and procedded to die. It has been a two days since then and it still idles very low hasn't died but has come very close. In addition to that while started it feel very bogged down and has lost a ton of power and sometimes starts to jerk while cruisin in gear at around 2000 rpms. I have no clue what could be wrong and any ideas and comments would be much appreciated! Thanks