OK, I guess I need a little help on this one. I have a 96 F150 300 I6. The engine light came on and the trouble was indicated as oxygen sensors. i replaced all three, one in each of the manifold halves and the one between the two cats. I had the trouble codes reset, drove it for an hour, stopped at radio shack and when I started it back up the engine light came back on and stayed. A trip to Pep Boys revealed trouble in the O2 seneor circuit bank one and bank two.

What the heck?! Please tell me how I can resolve this.

Thanks

 

What are the code numbers? It's slow a work today and I can probably help you out. O2 codes are not thrown due to bad O2 sensors very often. The MO at parts stores is to read the code and sell you what ever part is mentioned in the code. Much cheaper and easier in the long run to take to a pro for diagnosis and repair.