Airflow Meter: The Heart of your Engine's Breathing System ?

An airflow meter is a crucial component in maintaining optimal engine performance and fuel efficiency. This device is designed to measure the volume and density of air entering the engine, providing the engine control unit (ECU) with essential data to determine the correct air-fuel mixture. Proper air mixture is critical for efficient combustion, reducing emissions, and ensuring smooth engine operation.

Functionality and Importance

The airflow meter operates by using a sensor to detect air flow and communicate this data to the ECU. The ECU then uses this information to adjust the injector pulse width, ensuring the engine receives the precise amount of fuel needed. This precision not only optimizes performance but also enhances fuel economy.

Consequences of a Faulty Airflow Meter

If the airflow meter becomes defective, the ECU may receive incorrect information, leading to poor engine performance. Symptoms of a broken meter include erratic idling, reduced fuel efficiency, increased emissions, and potential stalling. Ignoring these issues can result in increased wear and tear on the engine, eventually causing more severe damage and costly repairs.

Compatible Subaru Models

• Legacy
• Forester
• Wrx/Levorg
• Wrx