Okey I am having trouble changing a rear o2 sensor on a 2000 sable 24v DOHC Duratec engine. I am hoping that someone has a tip about making it easy reaching down in back of the engine.
the second issue is that I thought this car had 2 upstream and 2 down stream but I have found 2 in the engine compartment and 1 under the car and I swear it is before the cat. am I crazy. I will post a piture of the third one tomorrow
here are a couple of pics of the two in the engine for reference
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