Ok my cars idle is fairly rough and sometimes at idle it stalls. Well today when i was driving the service engine light came on so when i got home i turned off the car and the light never came back on so i pulled up the code via the paper clip trick and i get a code 32. As far as i know that deals with the EGR. but where do i start how do i diagnose this? is it possible this is my reason for my bad idle?

 

anybody got any ideas