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Air Flow Meter - MAF

Air Flow Meter - MAF

Air Flow Meters (MAF) – Accurate Air Measurement for Correct Fueling & Stable Engine Performance

The mass air flow sensor (MAF) measures the exact amount of air entering the engine, allowing the engine control unit (ECU) to calculate precise fuel delivery. Modern engines rely heavily on accurate airflow data to start cleanly, idle smoothly and respond correctly under load.

When a MAF sensor becomes contaminated or begins to fail, the ECU receives incorrect airflow information. The result is often hard starting, unstable idle, hesitation, over-revving or stalling. These symptoms are frequently mistaken for fuel pump or ignition faults, leading to unnecessary part replacements.

For a detailed technical explanation of how airflow data affects startup, idle and injector operation, read our in-depth guide:
Why Modern Vehicles Fail to Start or Idle Unpredictably – How Sensors Decide Whether Your Engine Lives or Dies

Why Choose Our Air Flow Meters

  • OE-Accurate Airflow Measurement – Calibrated to deliver precise air mass readings for correct fuel calculation.
  • Stable Idle & Smooth Throttle Response – Helps eliminate hunting idle, hesitation and surging caused by incorrect airflow data.
  • Built for Harsh Conditions – Designed to cope with dust, heat and stop-start driving common on South African roads.
  • Prevents Over-Fueling & Lean Conditions – Protects injectors, spark plugs and catalytic converters from damage.
  • Workshop-Trusted Reliability – Used by technicians who want accurate diagnostics and fewer comebacks.

Restore correct fueling and engine response by replacing a contaminated or failing MAF sensor with a quality, vehicle-specific unit.

Installation & Servicing Tips

• Always inspect the air filter and airbox seals before installing a new MAF sensor.

• Dust, oil vapour and poor-quality filters are leading causes of MAF contamination.

• Avoid touching or cleaning the sensing element with aggressive cleaners unless manufacturer-approved.

• Clear fault codes and allow the ECU to relearn airflow values after installation.

• Address intake leaks immediately, as unmetered air will damage the new sensor.

Poor servicing is one of the most common causes of MAF sensor failure. Learn how delayed maintenance leads to hidden engine damage in our servicing guide:
Most South African Drivers Are Servicing Too Late – Here’s the Hidden Engine Damage They Can’t See Yet

Explore Related Engine Management Components:
Throttle Bodies
Throttle Position Sensors
Crankshaft Sensors
Camshaft Sensors
Active filters

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