Where is the oxygen sensor located on a 2002 Chevrolet S10 2.2L 4-cylinder?

The oxygen sensor location on a 2002 Chevrolet S10 2.2L 4-cylinder can vary slightly depending on the specific engine configuration and whether it's a pre- or post-catalytic converter sensor. However, it's generally located in the exhaust manifold or the exhaust pipe, relatively close to the engine.

To be certain, you should:

* Consult your vehicle's repair manual: This is the most reliable source for precise location information.

* Look for a wire leading from the exhaust: Follow the wire; it will lead you to the sensor. Oxygen sensor wires are usually gray or white.

* Check online diagrams: Search for "2002 Chevrolet S10 2.2L oxygen sensor location" on sites like AutoZone, Advance Auto Parts, or a similar parts store. Their diagrams often show the sensor's location.

Remember that most 2.2L engines of that year have at least one upstream (before the catalytic converter) and one downstream (after the catalytic converter) oxygen sensor. The upstream sensor is crucial for engine control and is more likely to need replacement.