I have a 99 stratus gls. For three days now I have noticed the following: (sorry I do not know car mechanical terminology)

When I take car from Parking to Drive, it jumps. THe same when I go from Drive to Reverse. Doesn't do it when it goes to Parking again.

Today I noticed, the car does not mark how fast I am going, at all. My power locks do not lock automatically when I am driving, probably because the car is not marking velocity, and It doesn't gear up past 2nd gear (it is automatic). My autoshift doesn't go past 2nd gear either. Please someone help me. I am no interested in making my car look nicer, I just wanted to work.

Please, please, someone help me!