I have a 2003 Dodge Dakota with the 3.9l. I came to a light today and it acted like it wanted to stall out but didn't.. It stumbled, caught itself and went back to idle. It did it twice at the same light.. Both times it caught itself and went right back to idle. I thought maybe my IAC valve but wouldn't it jump up and down in RPMs if that was bad?.. Its only ever done it twice and afterword's it drove just fine... Any Info that may help would be GREAT!!

P.S truck has a recent tune up. 8mm plug wires, accell Coil pack, and good plugs.

 

All thee Dodge guys an no one has the faintest idea of what I could be?

 

I will move this to the 2nd generation Dakota sub-forum.

 

Mine does it too sometimes. I still don't know what it is either. You could try to clean you throttle body. Not that hard and is free. Your IAC may be getting stuck but when mine was doing it, the truck was stalling and not recovering.
Im pretty sure the problem is coming from one of the three sensors on the throttle body, just couldn't tell you which one. You should test them with a volt meter and see if you get the right readings.

 

Check for vacuum leaks a vacuum line is cracked

But Jeremy98dakota has some good points to look into IAC or TPS