I had the same problem a year and a half ago. The engine light going off and on and when i put into gear i got an "x" over the "d" drive and the car would shake and barely go when i pressed on gas. Took it to get checked and it came back as code p0700 transmission control system malfunction. Took it to get fixed somwehere else and it was over 300$. They said something about spark plugs, but what does that have to do with transmission? It is now doing the same thing again and i dont havethe money to fix it. Does anybody know exactly what it is? Can i get the parts somewhere and have someone fix for me?? please help!