last night the engine was idiling at around 500 and was missing like crazy but if you reved it up it would run better. This morning it would not start so i ran the code reader and 214 and 118 code came up. Code 118 is Engine coolant temputure sensor above maximum voltage/ 0 to -40 F indicated. Code 214 is Cylinder identification circuit failure. I need to now what this means and what i have to do to fix it.