i made sure to erase the codes, in fact to make sure i disconnected the ecm (engine controler to make sure that it was erased.) i then drove it around for about 10 minutes and then the light finally came back on. i am really puzzled. i also for got to mention that i have mn12performance eec tuner installed. (no changes from the already loaded "performance enhanced version" that came with it when i bought it.
i amthinking that maybe the computer itself is bad or that ford has com out with a revised sensor that i am not aware of.
thanks,
chip