Just a question for you: Is your check engine light on? My car is doing something similiar to this. Did you have a code indicating
transmission speed sensor and ECU or just a guess? I am taking it to the repair shop today and see what they have to say. My car was running great until about a week after a timing change, water pump, and o2 sensor replacement. My check engine light isn't on right now which really suprises me. I will post what my mechanic finds out.
What did the mechanic say?