Exhaust Emission Control System
WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Operation and necessary maintenance of the exhaust emission control devices used on this engine are covered in the INTRODUCTION - GASOLINE ENGINES article.