I have the exact same car and has just started doing the same thing- first time when i was suppose to do a long trip! great :-S
Was told to do the plugs...but that hasnt helped.
Its rough as guts going up into 2nd gear but not when it is changing down. Slight jault going from 2nd-3rd but not as bad. Overdrive light is flashing aswell :-(
Sharlene
April 2011