Im getting the same 2 codes that translate to 1) Right Bank too lean 2) Left bank to lean. I would think it was teh O2 if it were one side or the other, but its both banks at the same time. At high RPM's sush as passing another vehicle teh check engine light BLINKS if you back off it quits, im afraid im gonna lean out the motor and blow it. It sounded liek a Fuel Pressure Regulator, but i called ford and they said the Trac doesnt have a Fuel Pressure Regulator? Any ideas???????????????????????????????:angry::angry::angry: