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Eliminating other causes
At times, a poor electrical connection at the air flow sensor connector could also cause the air flow readings to be out of range. For this reason, the air flow sensor connector terminals as well as the wiring needs to be carefully inspected.
Alternatively, if an air filter is not installed properly, or the air filter box is not properly closed, a piece of debris can get sucked into the mass air flow sensor and cause problems. Sometimes the debris can fall in during the air filter replacement. In this case, the repair is easy. The mass air flow sensor must be cleaned, and the air filter must be reinstalled correctly or replaced.
How to Clean a Dirty Mass Airflow Sensor
You should clean your mass airflow sensor every six months, or every time you service your car. Cleaning it when you change your air filter will be a good way to save both time and money.
• Remove the Sensor
To clean your mass airflow sensor, first, you must remove it. The sensor is in your car’s airbox housing, or air mass meter housing. When removing the sensor, be sure to never touch the wires, as they are delicate and small. If it is broken or damaged it will need replacement, prices start at R895.00 so it is best to be cautious.
• Clean the Sensor
Use a special mass airflow sensor cleaner, or oxygen sensor safe carb cleaner and spray it onto your sensor, follow the product instructions, making sure not to damage your sensor.
• Dry and Reinstall the Sensor
After cleaning your mass airflow sensor with either the cleaner, let it sit, for 20 minutes or more. The sensor must be completely dry before it can be reinstalled in your car, otherwise you may damage it.
Have a look at the following parts on Start My Car:
Mass Airflow Sensors:
Air Mass Sensors:
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