Not the usual car/motor you guys deal with here but it's worth a shot.

Car - MX73 Cressida

motor / part in question - 5mge

problem - Doesn't want to idle off a cold start. If you sit there for 5 minutes feathering the throttle between 1000 and 3500rpm, its fine and idles normal.

occurs/started when (if applicable)-
Cold start

personal situation (if applicable)-