i have 89 62 that at times will randomly drop idle when it starts. it gets down to about 500 where it will sputter and jutter as if it wants to die but wont quite die. sometimes giving it a quick pump of the gas pedal will solve the problem sometimes it wont. The PO had lazily removed only what looks to be about half the smog system with random vacuum hoses hanging loose. I've got a write up including parts on how to fully desmog and am planning on doing it sooner than later. I wanted to get a second opinion from the community on this issue. Would a half removed smog system cause these random low idle issues? thanks much