You could have one or two problems.

1.  The idle stabilizer could be bad.

2.  The aux air regulator might not be working.  It's supposed to let
the engine idle faster until it has warmed up.

Mike

craig cowan wrote:
> Hello all. I've been trying to find the root of my idle issues, but im still
> unsure. Heres the problem..... It will start right up....then run rough or
> die right off. Then, it will start right back up again. It runs fine though
> (except for the idle issue), plenty of power and all that good stuff. So
> i've played with the timing and found that certain spots will allow it to
> idle (though really poorly) but will not allow it to run right. These are
> clearly the wrong spots for timing. I marked the distributor before playing
> with timing, so i know its back where it was....but the idle still runs very
> strangely. I've played with setting the idle through the screw on the
> throttle body and have had it everywhere from 1 turn out (from close) to 6
> turns out. It does have an effect, but not much. All this is being done with
> the idle control plugs unplugged and plugged into eachother. SO, i somehow
> found a combination of timing and idle speed setting that actually runs
> pretty well. So, i plugged the idle control unit back in expecting that to
> take over the rest and make it run right.....No change. But its idling along
> pretty well...till it randomly runs like crap again. Totally random. Then,
> idles along fine. Any thoughts?
> It runs a little better when warmed up.
>
> -Craig
> '85GL
>