[MikeD2]

Thanks for the Diagrams Rod, they show more than just o2 Sensors. I printed them out & put them in my Haynes Manual.

I struggled (working under ramps) but I managed to change out the back Downstream (Bank 1) Sensor. I can see both Front Sensors but not the Upstream back Sensor.

Previously, when I started the car I smelled fuel. After I installed the new Sensor I didn't notice the smell. The Check Engine Light remained on, still with Code P2270. I tried to erase it with my scanner but no luck. I did not yet try to disconnect the battery to erase the code, I was hoping it would go out on its own.

My son has been driving this car, he has not used it this week since I was afraid of damaging the Cat. I told him to use it for work tomorrow.

As far as the Upstream Sensor goes, I would still like to change it. It looks as though its below the rear Spark Plugs. If that is the case, I will probably need a Pro.

My son has a 500 mile round trip this weekend, I guess we'll see how the Sable runs tomorrow. I could let him take Mom's Milan if need be.

Anyway, thank you for all of your help over the years; even if it's not my Thread.