Has this been fixed ? What did it take to fix it?

 

Try unplugging your upstream O2 sensor. If problem goes away replace sensor. I have had the same problem and this was the fix. Good Luck.

 

Has anybody found the root cause to this problem. I'm having the same symptoms and have tried just about everything trying to fix it. New IAC, TPS, MAP, 02S, plenum, rotor ,cap, spark plugs, carbon canister, remove and cleaned TB, vaccum lines, reroute wires, compression check is good. I have no codes and still no solution.
There's gotta be a single point failure that triggers this sporadic iddle behavior.

 

Fuel pressure?

 

I hate to be Captain Obvious here, but my truck was doing something very similar to what you all have been describing and the only thing wrong with it was a corroded battery cable and terminal. I try to stick with the KISS method when working on anything. Keep It Simple Stupid. Of course that could have a lot to do with my limited brain cells.

 

Fuel pressure is good. Battery cables are good.
Anyone know how to reset the PCM.

 

Mine was doing the same thing. Changed the 02 sensor today and it seems to be doing better..

 

mine was doing the same thing and got worse would backfire and cut out of driven before it warmed. Tried everything. Remove your intake air temperature sensor see if it has the slightest but of oil or build up on it. If it does cleaner or replace it. It's not that expensive. Does the same thing as a dirty mass airflow sensor sends false reading to pcm in open loop. Once in closed loop o2 sensors take over and adjust fuel accordingly.