ok...im new here and very frustrated...my volvo runs very rough while in gear and lower than 1500 rpms...jerking and bucking when starting from a stop...rough idle when in gear and stopped...there are no codes...have been told at varoius shops that it could be torque converter issues...ive seen some talk on here about software updates? ive replaced a lot of things fuel press regulator, maf,cleaned throttle body.plugs, wires ,fuel filter on and on...please help! lol