well the car has 95000 miles, is Awd. The service history is pretty good. It jerks when I am doing about 40 to 45mph and then sometimes when I am doing 60 mph. It doesn't do it all the time specially if you are giving it gas, uphill, downhill, straight road it doesn't matter. It has a couple of moth doing it more frequently. First time I felt it was like 6 moths ago. The are no codes, I do have an OBD reader. Can a bad plug/coil do it only sometimes? I did change the TSS and the OSS sensors. Can something be bad and not do it all the time? That is a little weird...other than that the car drives nice.