Hello, and thank you for writing in. You will want to turn your attention to the idle air control valve, throttle, and throttle position sensor. You can inspect the intake system for obvious vacuum leaks, a dirty filter, a clog,...
A P0430 code indicates the catalyst efficiency has fallen off. If there are no other codes indicating misfires and if the check engine light is not blinking, you should be OK to drive your car. If you have trouble scheduling...