2001 Dodge Dakota 4.7L ... Truck starts, doesn't run rough, but idle is not steady and stalls constantly. I have replaced: Crankshaft position sensor, Camshaft position sensor, TPS, IAC, Battery, Battery terminals, and O2 sensors. I had even tried a different PCM, but when that didn't solve anything, I went back to the original one. At this point, I don't know what I could be overlooking. Seems that I've tried everything that I have read in forums that have caused these issues. Please Help!!!

vacuum leak?

I can't hear any vacuum leaks now, but I did have a cracked line that I already replaced.

with engine running at idle, spray brake cleaner around intake manifold see if engine idle reacts (raises or lowers)

I replaced the cam sensor again, this time with one I pulled from a junkyard, and it runs like a dream. I went through 3 brand new sensors, all of different brands, and none of them would allow it to run properly, but a stock sensor from a junkyard made it purr. Hope that this will help someone else that runs into the same issue.

You have a broken valve spring