I have a 2001 Chevy S10 extended cab 2.2. It is getting terrible gas mileage service meter says oxygen sensor. Which one I gues it has a few?
If you have a service/check engine light on get it scanned. Autozone does it for free. They will be able to tell you which one. As far as terrible gas mileage, do a tune up on it. Spark plugs, plug wires, fuel filter, air filter, ect. It will do wonders for your gas mileage.
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