Diagnosing a Failed Catalytic Converter
Howdy - recently, the cats in my 2006 Taurus failed. The good news is that, since it is under 8 yrs/80,000 miles, it is covered under federal warranty, and we are now waiting for the parts to arrive at the dealership.
But, I kind of would like to figure out if there is something else wrong with the car that may have caused the cats to fail in the first place. I've heard that misfiring and bad exhaust valves are two likely culprits. Is it possible for mechanics to do any diagnostic tests to find a problem? If it fails again, I won't have this awesome federal warranty to cover me.