Come on, nobody knows? OK, here's what I do have. From the 95-98 Haynes Contour repair manual: "Fuel system-mixture too rich....check egr valve". From Haynes Automotive Emmission Control: "Adaptive fuel rich limit reached at part throttle, system lean, right side". From the Actron guide: "Hego sensor-voltage signal not switching: indicates "lean" during part throttle engine operation (bank #1). Plus, this site,[URL=www.mrfile.com/metroplex/eeciv.htmlmrfile.com[/URL] So, what could it be? Is the o2 sensor bad and unable to do its job, or is there a problem before the sensor with the fuel mixture?
