Yeah, I agree. I had the same problem when i had to adjust my idling a few days ago. I had it too forward so it would hang for about 5-7 seconds before going down.
disconnect the cable(-negative) let sit for 20 minutes. Then disconnect the IAB which sits in front of throttle body. Connect cable back and turn car on. Start turning to right 1/8 (increase) or turn to left (decrease). Its quicker to have someone in the car to watch the idle. Depending on if you want it alittle advance then turn to right so it is over the 1 RPM.
For myself it was too far forward at 1500 RPM. So i adjusted to it got on the "1". If its under the 1 it might hesitate or cut off. Keep it at 1 or above that.
The only time i had "hang time" was when the EEC was reading the new settings.
Once you find the right setting, turn car off and reconnect the IAB. let run for about 2 minutes with no accessories. turn off again and let sit for 2 minutes. turn back on with all accessories on for two minutes. you should be good to go. then of course, test drive that baby and see what happens.
Oh, also check your TPS make sure it is around .95 - .99. but not more than 1. If so, it may start doing some funky stuff.
Sierra