weird start up "problem"

[blues14]

on my ka24e auto (cali emiss) when starting the car cold, it does its high idle fine, then when it goes to drop down, it stumbles and dies. then you start it right back up and it runs fine. what could be causing this? how do i fix it?

[NISTECH]

Start by checking your base idle and timing. You could also check your grounds,make sure they are clean and secure.