Car runs ruff. poor idle seems to miss on couple cylinders. change plugs,wires,coils
both sensors.cked ground ok,idle air control valve (not connected )runs somewhat smoother.replaced didn/t help
What else can cause this problem. has 100k miles
Check for vacuum leaks and try cleaning your mass airflow sensor, if the car is equipped with one. Only use cleaner specifically designed for mass airflow sensors to clean it. CRC makes such a product, and it is sold at most auto parts stores.