My Jeep is jerking forward when I slowly accelerate between 0-30 mph. Now it started jerking forward when taking my foot off the brake. First time was 5/24/2019 again on way to the dealership for repairs 6/6/2019. They did a transmission computer reboot. I thought it worked, I got about three miles front the dealership and the bucking, jerking and a noise I have never heard before. I called the dealership, another tech checked it again he said it sounds like an engine misfire. I have another appointment 6/11/19 to have them hook up another larger computer up and drive it around throughout the day. thinks it’s the engine. This all began before we replaced the spark plugs with new Bosh Double iridium Spark plugs, hoping it would help. Nothing changed, we drove 76 miles it was fine. Stopped for dinner, then as we were about to head home the Jeep jerked four times before reaching 40mph, it continued to jerk every time upon slowing, stopping and starting. We love our Jeep, this is the first issue we have ever had. We purchased our Jeep new 10/31/2013. We have two other jeeps currently.