i got a obd0 b16 in a 89 hatch and when im on the freeway sometimes the car will trow a code 67 and start jerking all around i have to turn off the car and start it up again and sometimes it wont do that for a while. we checked the code witch is cat sensor wich there is no sensor and we replaced the dizzy because i thought that may be the problem my ecu has a jun chip any suggestions thanks