Where is the oxygen sensor 2000 Chevrolet S10 2wd 4 cylinder?

The location of the oxygen sensor (O2 sensor) on a 2000 Chevrolet S10 2WD 4-cylinder can vary slightly depending on the engine's specific configuration. However, it's almost always located in the exhaust manifold or the exhaust pipe very close to the exhaust manifold.

To find it definitively:

1. Consult your vehicle's repair manual: This is the best resource. It will have diagrams showing the exact location of all sensors.

2. Look under the vehicle: The exhaust manifold is typically near the engine block. The O2 sensor will be a threaded device screwed into the exhaust. It usually has a single wire (for older vehicles) or multiple wires (for newer vehicles with heated O2 sensors) coming from it. You might need a flashlight and possibly a mirror to get a good view. Be careful! The exhaust system is hot when the engine has recently run.

3. Use an online parts diagram: Many auto parts websites (like AutoZone, Advance Auto Parts, etc.) allow you to enter your vehicle's year, make, model, and engine to see a parts diagram. These diagrams often show the sensor's location.

Remember to always let the exhaust system cool completely before working on it to avoid burns.