Quote Originally Posted by lionelhutz View Post
Throttle off coasting right before the clutch is disengaged or something different?

What happens if you bring up the rpms when idling and then snap the throttle closed? What do the IAC counts do when you do this? There should be some type of throttle and/or speed following tables for the IAC that open the IAC as the throttle opens and/or the speed increases.

Is there some kind of idle timing table that is different than the main table?

Did you find any DFCO parameters?
The problem occurs throttle off, clutch in. Throttle off, coasting does not present any problems, until clutch is pushed in.

Yes... There are multiple spark tables. SA- Initial, SA - Idle State, SA-Main, SA-Extended. Plus about 10 others. What should I be looking for?

Yes, there are about 10 or more DFCO parameters. I have not changed any of these parameters. What should I check?