I have done a code search on my Mustang and it shows the same code each time. It codes 1443 which is the Idle air control valve. I have changed it 4 times, and it hasn't helped. I clear the codes and any where from immediately to 40 miles later it comes back on. Anyone have any ideas what might be causing this. I just have a hard time believing that I have installed that many defective parts. I am hoping that someone out there has had the same problem or knows of someone who has.