have you put transmission fluid in it? my car does that-it's not a plymouth it's a 96 mitsubishi-but when i put some transmission fluid in it, it runs fine again. my dad has the same problem with his dodge and he says that it leaks transmission fluid. i've had lots of people tell me that my transmission is not falling out(even though for the longest time i thought it was). my dad's car has done it for years now and his car is still running fine, we just have to put transmission fluid in our cars every so often. that may not be your problem, but it sounds like it could be
