Hello all my name is Jim.
I have a '93 Stealth R/T 5 speed. Had a cold start idle around 2000 RPM in the summer. When warmed-up it idled fine and ran fine, and started up fine. I replaced the IAC and had the ECU refurbished at the same time. Now the start-up idle is 2200-2300 RPM, but good when warmed-up. I did have to lower the throttle screw with the new IAC. What else can I test or adjust to lower the cold idle?