So, I have an issue that I have yet to nail down- 05 liberty 3.7/6spd. it sometimes holds about a 1200 rpm idle, when shifting gears, and also will hesitate at different points across the throttle range [feels like it doesn't fire on a cylinder or two momentarily].

Before I throw every sensor and an ECM or reflash- any thoughts?

- fuel pressure is steady under load about 50 psi and there is not bleed down like a leaking injector, and replaced the TPS already. Thinking it might be IAC but i haven't been able to find anything specific on LOST or KJ forums with a 6 speed manual

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2005 Liberty 3.7/ 6speed

2004.5 Ram3500 Cummins/Auto

Have you checked your spark plugs? I just replaced them in my Commander (3.7) after it had very similar hesitation symptoms. All 6 were toasted with almost 3/16 gap! I've been kicking myself for not replacing them sooner.