Need Some Help Guys, B20 swap bad idle

[8urcivic]

also found this disconnected cant find where it goes.

that plug goes to the top for a factory ls manifold. B20s do not have that sensor.

 

[dregonomics]

ill repost this in the 1990-93 section thanks for your help

 

[Jory]

Hmmmm.

Did you ever find out what was causes that idle?
I've been having the same exact symptoms in the exact same way you had them.
Can't seem to figure it out quite yet.. It's done it while sitting at stop lights, and once while i was sitting in a parking lot.
Died on me a couple times too. Any ideas?