Where is the engine temperature sensor on 2002 s 10 4.3 liter vortex engine?

The engine temperature sensor (ECT) on a 2002 S10 with the 4.3L Vortec V6 engine is typically located on the cylinder head, near the thermostat housing. It's a single-wire sensor, and it's usually a smaller sensor compared to other sensors in that area.

However, the exact location can vary slightly depending on the specific engine configuration. To be certain, you should:

1. Consult a repair manual: A Haynes or Chilton repair manual specific to your year and model S10 will have diagrams showing the exact location of the ECT sensor. This is the most reliable method.

2. Use a parts diagram: Online parts stores (like AutoZone, Advance Auto Parts, etc.) often have parts diagrams that you can look at based on your vehicle's VIN or engine details. This can help you visualize the sensor's location.

3. Visually inspect: With the engine cool, carefully examine the area around the thermostat housing on the cylinder head. Look for a smaller sensor with a single wire connector. Be cautious near hot components.

Remember to always disconnect the negative battery terminal before working on any engine sensors or electrical components.