I have a 1997 Honda Passport (3.2L, V6 engine, 141,989 miles), and it has failed smog due to (very) high emissions, specifically " HC" and " NO" emissions. I had a diagnostic run on it, which identified Catalytic converter and O2 sensor problems, on the right side. I replaced the entire right side emission system (pipe, cat converter, O2 sensors), but the emissions reading came in even higher after that! I have replaced the air filter and added gas & oil treatments, apparently with no success. My " check engine" light is still lit as well (codes related to Cat, O2 sensor problems). Can anyone help!
Wednesday, August 22nd, 2007 AT 8:06 PM