Without this, the ECU will believe that the engine is still running with faulty sensors and will default back to data already received before the replacement. Ensure the arrow points in the correct direction when mounting the component in position.Īfter replacing engine management components, many vehicles will require a reset of the parameters to tell the ECU that a new part has been fitted. Most Air Mass Meters have an arrow on the outer case to indicate the correct direction of airflow through the Air Mass Meter to the engine. When fitting: ensure the correct mounting direction The air filter should be changed every 15,000 miles to ensure efficiency and durability of the Air Mass Meter. Dirty, sub-standard or worn out air filters can contaminate the element of the sensor and cause it to fail. It is highly recommended to change the air filter before replacing the Air Mass Meter. There are a number of key points to consider when replacing an Air Mass Meter, including the all-important resetting of parameters procedure: The vehicle’s ECU is very similar, it simply needs to calculate how best to use the newly fitted component.” “Fitting aftermarket sensors is similar to plugging a device into a PC or laptop – the PC will recognise the new device, then find and install the drivers it needs to operate correctly. Often the car will fall into ‘limp’ mode and the OBD light will switch on. Common symptoms of a faulty Air Mass Meter include erratic engine operation, reduced performance, increased fuel consumption, stalling, hesitation, and rough idle.
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