Runs rough (rich condition). SES light on, PO171 Lean Bank 1 Sensor 1. No vacuum leaks. KOEO both O2's read .5. After 1 minute running, front O2 reads 0, rear O2 reads .900 (rich). Replaced front O2, ECM, wire from O2 to ECM, and ground wire (ECM to ground). N...

FIX posted 7/28/2009

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle