When to Replace the Mass Airflow Sensor - Signs & Symptoms
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When to Replace the Mass Airflow Sensor – Signs & Symptoms

About the mass airflow sensor:

The mass airflow sensor (MAF) is an important sensor that is positioned on the engine’s air intake. Its purpose is to measure the rate and density of air as it enters your engine.

As the mass airflow sensor measures air levels, it sends this data to your car’s electronic control unit (ECU). The ECU makes changes to fuel injection, allowing for a correct air/fuel ratio within the engine’s combustion chamber. The result is improved engine performance and fuel economy.

Learn more about how the mass airflow sensor works


How long does the mass airflow sensor last?

Mass air flow sensors are designed to last the lifetime of your vehicle. In fact, they have no scheduled replacement interval. For this reason, the sensor is generally not replaced until it fails. Generally, you should get at least ten years of driving out of your mass airflow sensor, but this can vary depending on several factors.

Over time, contaminants such as carbon will find their way into the mass airflow sensor, creating a buildup which makes it harder for air to pass through. The reduced air flow will affect the sensor’s ability to accurately read air levels in the engine, leading to problems with engine performance.


Symptoms of a bad mass airflow sensor:

  • Check engine light on – When the mass airflow sensor is not working properly, too much air could enter the engine and not enough fuel. This can trigger the check engine light on your dashboard.
  • Loss of engine power – A bad mass airflow sensor will affect your engine’s ability to operate correctly. You may experience a significant reduction in acceleration or the car may struggle under heavy loads or to idle properly.
  • Increased fuel consumption – A faulty mass airflow sensor will give incorrect readings to your car’s ECU. This will result in incorrect amounts of fuel entering your engine and the fuel not being used optimally.
  • Rough idle – Your vehicle may operate roughly with increased engine RPM while idling. This can be caused by a damaged Mass Air Flow (MAF) sensor.


Mass Airflow Sensor Replacement in Hamilton

Is your car in need of a new mass airflow sensor? If so, we can help! At Grimmer Motors, our team of experienced mechanics can diagnose and replace your old mass airflow sensor plus install a new one. This will allow for improved engine performance, fuel economy and vehicle emssions.

For mass airflow sensor replacement services in Hamilton, contact Grimmer Motors today!



Phone: 07 855 2037

Email: office@grimmermotors.co.nz

Address: 998 Heaphy Terrace, Fairfield, Hamilton

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