Kia rio 2007
I have a kia rio 2007 and when im riding my car it suddenly shift down to 3rd gear i think and doesn't shift anymore. Sometimes when it does that i turn the car off then start and it may start runner normally but most of the times it will start running and the shift to 3rd gear amd stay there. What must i do ? I have changed the motor and transmission fluid i have changed the filters i have changed the sparkplugs and ignition coils and still does the same. Please help me
