AC problem? Idle problem?

[KD2229]

Hi ALL, I have another problem no my 86 again.
When the AC is off, everything is fine, idle steady, no problem at all.
But, when I have the AC on, once I rev up the engine and let go of the pedal, the engine rev will drop very quick and sometime cause the engine goes off, any idea?
I check the hose (N-port) from the throttle body connect to a small silver reservoir, but again, everything is fine.
Thanks to advise!!

[Ivan141]

Sounds like your missing some kind of idle-up arrangement. If I'm not mistaken the ECU has an input for this that raises the idle when the AC kicks in. Dont ask me where to find it though.. have never seen a hachi with AC in my life.

[KD2229]

Here is 35 deg. in HK during the day. so, better have AC la.
Will try to check the idle up thingeee and hose, etc, etc, and give it a good clean, see if it can solve then....will try to do it late when have time.