I have an automatic 2006 wrangler x with a little over 60,000 miles and no mods. I've had the transmission serviced, a reprogram done and spark plugs replaced.
My jeep started jerking (about two months ago) all the time when it would shift from 1st to 2nd gear, I took it to a transmission shop and they reprogramed. It worked fine for about two days before it started jerking again. I took it to the dealership and they hooked it up and and no codes showed up. They serviced the transmission, I got better gas mileage but its still jerking from not only 1st to 2nd gear and occasionally from 2nd to 3rd. The hardest/roughest jerking is when the jeep is "cold" and also when it is shifting from 1st to 2nd gear. Like the title of the post states, its shifting as if a person who is new to driving a stick is driving and hasn't gotten the clutch to gas ratio "balanced" The dealership hasn't been able to "reproduce" the jerking when it shifts so they have about a dozen or so possibilities of what it could be.
I obviously don't know what it could be (partly because this is the first time a vehicle has done this type of behavior, I know very basic things about vehicle maintaince, and third because I'm a female.
) and the dealership has a bunch of different possiblities like I stated before. Any input or ideas of what it could be would be appreciated because its summertime and I'd only like to worry about getting caught with my top down in the random southern summer storms! Thanks again!