Bangkok: Claims circulating online suggest that cleaning the airflow sensor can improve performance and make a car run better. Is this true? Find out in our "Sure Before Sharing" series, Motor Check.
According to Thai News Agency, the "Sure Before Sharing" center verified the information with Suramis Charoenngam, an automotive technology tester and expert. Charoenngam confirmed that cleaning the airflow sensor, especially in older vehicles where the sensors have accumulated dirt and grime, can indeed enhance car performance.
The airflow sensor, commonly known as the Mass Airflow Sensor (MAF), plays a crucial role in a car's engine. It measures the amount of air drawn into the engine's combustion chamber. This data is sent to the engine system, enabling it to calculate and inject the correct amount of fuel corresponding to the incoming air volume. When this sensor is dirty, it provides inaccurate air quantity readings, leading the engine to inject incorrect fuel amounts. Conversely, a clean sensor accurately reads air intake values, allowing the engine to inject the correct fuel amount, resulting in complete combustion. This leads to increased power, improved responsiveness, and better fuel efficiency.
Cleaning the airflow sensor can be performed either by spraying without disassembling the parts or by disassembling them for thorough cleaning. However, it is crucial to use the correct cleaning solution. A cleaning solution specifically designed for airflow sensors or a contact cleaner for electronic contacts is recommended, as these solutions evaporate without leaving any greasy residue. It is strictly advised not to use multi-purpose oils for cleaning, as they contain lubricating agents that can leave an oily residue on the sensor, potentially causing malfunction or serious damage.
The frequency of cleaning the airflow sensor should also be considered carefully. While some may believe frequent cleaning is beneficial, excessive disassembly and reinstallation could damage rubber seals or internal components. For those using a standard car air filter and replacing it regularly, the sensor may start accumulating dirt affecting its operation at approximately 80,000 - 100,000 kilometers. Frequent cleaning, such as every 20,000 kilometers, is not recommended as it may lead to component damage and costly replacements.
In conclusion, cleaning the airflow sensor can indeed restore vehicle performance and improve fuel efficiency. However, it is essential to follow the correct procedures, use the appropriate cleaning solution, and adhere to recommended cleaning intervals to avoid potential damage.