My first jeep, I love it but. has been losing loss of acceleration for 6 months.after coming to a complete stop , you step on gas and nothing happens.does it when it fills like it but always leaving light or stop sign. had pcm changed 2 weeks ago and just started loss of acceleration again.no codes come up every time. dealer has had it : off and on for 6 months. when dealer has it they never have a problem. so ill go there and test drive it with tech in the vehicle. they think I'm nuts. any one else having similar issues. there at a loss since there computer shows no bad codes.