My 89 LX idles right at 900-1000 steady on a cold start.....closed loop.
As soon as it hits operating temperature it starts bouncing 700-900 rpm.
From there the idle sort of "bucks". Soon it becomes such a "buck" that it stalls the car. I have an E-303 cam and i know someone mentioned that they are notorious for that problem.
Now that i know the problem is only in "Open Loop" operation, is there anything i can eliminate right off the bat as i try to trouble shoot?
It can't be a vaccum leak or it would happen in both open and closed loop, correct?