Ford Focus 1.6 zetec 2003 - Cat inefficiencyArchived Message
Posted by j mccallum on December 23, 2006, 10:07 pm
Hi all, merry christmas, this vehicle is showing cat inefficient, checked lambda switching and both post and pre are switching, the pre seems to be 1.5 hertz at idle, is that normal, I thought that it should be 1 hertz as a max. Any way, is there a method I can use to run this vehicle very weak to try and get rid of the possible fuel contamination in the Cat. I think it is the constant cold starts and short journeys that has caused the problem. The emmissions are very good, apart from the HC being up at 150ppm, I have blocked off the PCV hose to eliminate that so I can only think contaminated cat from excess fuel during cold running. Any thoughts Ideas? Thanks in advance James