My check Engine light came on. I had a friend run the code and it said that I was running rich. I cleaned my injectors...intake manifold...and fuel lines. I have no idea what else to do. Also I have a wierd idle falter in higher gears at regular rpms ex. gear 3 to 4 3,200 rpms. Its wierd. I wonder would a bad o2 sensor cause this check engine chaos and the wird idle?

 

The o2 sensor might be bad..