Hello, my normal idle RPM was about 700-750. It started to bounce down about 50 RPM and then back up when stopped at a light. It was recommended that I clean the IAC. Used throttle/carb cleaner on the IAC until clean and also sprayed in the two holes on the throttle body. Very simple to remove and replace. Also replaced with new gasket. Now, Idle is about 500 RPM and parked idle. Will run for about 2 minutes then stall. I can drive and behaves ok but wants to stall when I stop. Have to brake and apply a little gas. I really didn't touch anything else. Just two bolts on top to remove and then cleaned. Why would this be worse? What am I missing? Did the cleaning uncover another problem/component? should I replace the IAC or is there something I should check? Thanks as always!!!