Where is the oxygen sensor located on a 1987 Toyota truck 4 cylinder engine?

1. The oxygen sensor (O2 sensor) on a 1987 Toyota truck with a 4-cylinder engine is typically located in the exhaust manifold, which connects the engine to the exhaust system.

2. Here are the steps to find the oxygen sensor:

- Open the hood of your vehicle.

- Locate the engine. It is typically located at the front of the vehicle, near the firewall.

- Follow the exhaust manifold from the engine towards the rear of the vehicle.

- The oxygen sensor is usually screwed into the exhaust manifold near the engine. It may have one or two wires connected to it.

Additional Information:

- The oxygen sensor detects the amount of oxygen in the exhaust gas and helps regulate the air-fuel mixture, ensuring efficient fuel combustion and reducing harmful emissions.

- Some 1987 Toyota trucks may have more than one oxygen sensor. Refer to your vehicle's service manual or repair guide for the exact location and number of oxygen sensors on your specific model.

- Replacing an oxygen sensor is relatively easy and can be done with basic automotive tools. However, if you're not comfortable working on your vehicle's exhaust system, it may be best to consult with a trusted mechanic or auto repair shop for assistance.