What year Pacifica? [As many point out, putting at least model year, gas/hybrid and trim in your signature line helps focus if you are talking about your own van.]Interesting issue and thread. My Limited was running in the garage after starting it and I got out to bring in the recycling receptacle. As I was outside the van I noticed the engine stumble but it kept running. It's only done this once. Other than that the only other issue I've had was the drivers window refusing to go up after putting it down a few times. It would start to go up an it would get about a third of the way up and go back down. I have an early model and I love it so far. I hate the rotary shifter though. Don't know what they were thinking with that.
I don't know what happens when the monitor cited in the recall doesn't sense properly -- if it totally initiates shutdown then your stumble may not be related, but only someone much more technically attuned to the issue could help here. On the other hand, almost every vehicle I've owned since they started really piling on the pollution controls in 30+ years ago, has had hesitation out of the blue at idle every once in a while - never quite stalling.
WRT the rotary shifter, I am not a fan either. Posters have complained about confusing it with the radio knobs. But I am guessing an important motivation was to reclaim dashboard real estate for the bigger screen. And wasn't it Chrysler that pioneered pushbutton automatic transmission controls in the 60's? A good rant about shifter design in many new cars is at
The Worst Shifter Designs of 2017 | BestRide
He has a very good point about shifter design in general:
Selecting gears is a critical part of driving an automobile. It’s something that you’re often doing in the dark, dozens of times a day. It needs to be completely intuitive for the newest drivers, but also needs to take generations of muscle memory into account.
Imagine being in an emergency situation and having to shift from reverse to drive in any of these cars, and you understand how important intuitive design is. When re-imagining gear selectors, designers and engineers need to be placed in an environment that simulates having to get the car moving while a stalker is walking up to the driver’s door, or a runaway cement mixer is seconds away from crushing the car to a powder. That test would eliminate these three poor designs immediately. (The three designs were FICAs Monostable shifter, GMC's Electronic Precision Shift and Mercedes new column mount.)
Later in the article, he specifically calls out the Pacifica, but not as strongly:
We’re enthusiastic about the Chrysler Pacifica. It seemed like there wasn’t much more you could possibly do to the minivan, but Chrysler reinvented a tired minivan lineup with a vehicle that not only meets the needs of families but provides a true luxury experience at the same time. The one sour note is the rotary shifter.
In previous years, we called out the Chrysler 200 for the same issue. It’s not as pronounced in the Pacifica for a couple of reasons, but the main issue is still that it’s a pretty puny little knob that’s relatively close to other knobs of similar size. Rotary shifters in general — like the one in all of Jaguar’s cars now — are a good space-saving solution, and Chrysler really made the most of it in the Pacifica.
Most manufacturers use a rotary shifter and still leave it in a gigantic console, but Chrysler has moved it up out of the way, which is a good thing. We just wish it was the size of the Jaguar’s knob, to avoid confusing it with the radio and heat knobs when driving in the dark.