conk1974 Posted July 28, 2015 Share Posted July 28, 2015 Ford focus 2008 1.6 TI Can anybody who is familiar with o2 sensor graphs cast their eyes over these graphs I recorded . I'm just wondering do they look normal especially the reaction of the post cat sensor after the revs go from 2500 to idle. The graph is over a three minute period. Cat problems? Lean A/F condition? The car has an extended crank over before starting and engine feels slightly hesitant and sluggish. Quote Link to comment Share on other sites More sharing options...
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