Ok, I've been meaning to replace my choke for a while... but all of a sudden my car bounces around the rpms.. it used to idle exactly at 600rpm, now it bounces from 500-700... this continues through the whole RPM range, a 200rpm bounce... it happens at all temps, rpm etc.

This started all of a sudden when I started my car to come home from work. No problems with the drive in in the morning, that evening started and was uneven.

Is this a case of my choke completly dieing (as opposed to it's half life it was leading up until now), or should I be looking for something else?