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O2 Sensors-time to replace? 850

I did exactly what you describe on my '95 850 non-turbo with 130,000 miles. Thinking that replacing them might help my MPG, I had both of the original O2 sensors replaced. I did not see any change to my fuel economy after the new sensors were installed. I was getting 22 MPG combined city/hwy before the change and 22 MPG after the change. I would check out all of the other suggestions mentioned first.






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