Hi, been having an issue. The jeep has 115K, 4.7L, runs great, idles great, when in neutral or park I can stomp the throttle to the floor with no hesitation. However, it will frequently cutout like it's going to die then take off when starting from a stop. Fast acceleration while already moving is no problem. Frustrating part is there are no codes thrown. Here's what I've done:
Cleaned and oiled the air filter (K&N)
Cleaned throttle body
Sea Foam through system
Replaced IAC valve
Replaced TPS
Replaced intake air temp sensor
Replaced crankcase position sensor a couple years ago for unrelated issue
Replaced camshaft sensor a few years ago for unrelated issue

Would think anything else should cause it to not idle or rev properly when in neutral or park. Any thoughts? Timing of this is bad since my son is just starting to drive it on his own. Thanks for any insight.