I have a 1992 dodge dynasty, 3.3liter, and I know this is a very common problem. It started going into limp mode a couple months ago and would do it occasionally. It got more and more frequent, now every time I drive it, it starts out by attempting to shift, but ends up in limp mode (2nd gear). When it first happened, I changed the transmission filter and oil and that seemed to help but only temporarily. I've changed the input and output sensors on the trans. One other detail, and I'm not sure exactly how this relates, is that the speedometer is often erratic and often reads 80-90mpg when I'm barely moving. Any suggestions would be appreciated, thanks.