Emissions Gurus,

I have this 85 Sedan DeVille 4.1 that is running .85 gpm CO (5-10 gpm I'd call normal with a new cat) and 4.5 gpm NOX (limit 3.0).

Someone has a new cat & O2 sensor on it, the EGR & controller work, the fuel pressure is steady 11 lbs, the ... Login to read more.