P0171 Jeep - jerks when let off acelarator

Question

Rough idle when let off gas

Answer 1

P0171 Fuel trim system lean (bank1)

This is what is described as a lean misfire, The engine management that this engine uses is a speed density, so any vacuum leak will affect the performance of the MAP (manifold absolute pressure) sensor.Check for vacuum leaks especially at the MAP sensor fitting.