Catalytic Converter
WARNING: This page is about a different car, the 1984 Volvo 760, 1984 Volvo 245, 1984 Volvo 244, and 1984 Volvo 242. However, it is still accessible from the selected car via links, so may be relevant.
CIS Lambda systems can control air/fuel ratios within .02%. This close regulation allows the use of a 3-way catalyst that can decrease NOx, HC, and CO emissions. The converter can be damaged by improper adjustment of the system or by the use of leaded fuels.