After my cold idle kicks off on my 670 street avenger, probably around 160 degrees, whenever I come to a stop the car will either idle way down and die or almost die until the car gets up to full operating temp. I set the idle mixture with a vacuum gauge, and I've installed an edelbrock a/f ratio monitor and it idles at 12.5 -13:1, 700rpms. The temperature here hasn't been much over 60 degrees and when I was driving it when it was warmer last year I didn't have the problem. Thanks for any help or ideas.

 

You should do the idle mixture and idle speed adjustments when the engine is fully warmed.

If it has issues between the time it's dead cold and when it's fully warmed, then the choke is coming off too soon.