My 95 with almost 180K quit shifting into third gear about a week ago. When it tries to shift it simply acts like someone put the car into neutral. When it is kept in "D" it will not shift out of first but can be driven in second if the gear shift is moved to "2." Even before this happened it was more or less sliding from first to second instead of a firm shift. Is there anything else this could be or is it just time for a new transmission? Any ideas?