[jeffcoslacker]

I don't know if it's common to Hondas, but that's precisely how GM cars act when the TPS (throttle position sensor) is going bad...hunting for idle speed, revving on it's own, holding too long, overrevving and shifting abruptly...

The control module uses the info about throttle angle from the TPS to decide the right rpm to upshift, based on vehicle speed compared to throttle opening, so for example if it would shift to second at 22 mph under normal conditions, with the throttle at 30%, when it sees the throttle at 80% because you are standing on it, either racing or pulling a load, it will hold first gear to a higher speed and rpm before shifting...and so on until the throttle is released...

When the TPS signal gets corrupted, the tranny module can't guage throttle opening, and shifting is erratic, idle is affected because the engine module can't tell when the throttle is closed, so it idles too high, etc...

Try unplugging the TPS and see what happens. If the shift patterns change dramatically, that is probably the problem. It may shift at the same speed regardless of throttle application with it unplugged. That is to be expected. You just want to see if the excessively long hold and upshift abruptness go away....