2000 Rodeo, 3.2 idle air control/CEL/tranny

Ok, I have been having the IAC issues, dying on start, then high idle at times. I have seen many posts on this, however, my 2000 rodeo does not seem to have the IAC on the throttle body as many other posts indicate. I called a dealer to inquire about the part, and they said something about an idle air or idle speed sensor, which apparently lives inside the throttle body...any help?

I also have my CEL on intermittently, once every few weeks it will come on for a few hours to a day or so. The code read random misfire in one or more cylinders. The thing is, the Rodeo doesn't run any differently when the light is on than when it's off, which is why i have kind of ignored it. The first time, i changed all the plugs, but that was it. Could the IAC/something similar be the culprit?

This SUv has also had a rebuilt tranny in the last year, which now has a slow seepng leak which two different shops have been able to fix properly. The most recent Aamco put in new pan gaskets, but the seepage began after a month or so.

Any help is greatly appreciated!
Thanks!!

you may have leaking intake manifold gaskets

2eye is right the most common cause for a misfire on the +98 is a bad intake manifold gasket. I'm willing to bet that +75% of all +98 isuzu's have had this replaced.

as for your leak chekc out the faq's for common tranny leak spots.