A Mercedes Benz mass air flow sensor has the responsibility of gauging both the amount and temperature of air coming into the engine. With these measurements, it helps the fuel injection system decide the mixing ratio of fuel for peak performance in both cold climates and high altitudes. Like all car parts, a mass air flow sensor can fail, but it can be easily replaced by even the most novice mechanic.

Signs the Mass Air Flow Sensor Needs Replaced

A check engine light may indicate the need for a new mass air flow sensor. A Benz also gives a variety of clues. Improper throttle response may indicate the need for replacement. Additionally, any engine hesitation during acceleration, hiccups, abnormal idling, stalling, or refusing to start at all points to a mass air flow sensor needing replaced.

Can Replacement Wait?

In a word, no. A Mercedes Benz mass air flow sensor failure leads to a decline in engine efficiency. This decline makes gas mileage suffer and makes the process more expensive than necessary. Have the problem diagnosed as soon as the signs of failure appear.

Replacing the Mass Air Flow Sensor

Once the problem is correctly diagnosed, pull the engine cover up one side at a time. The Mass air flow sensor is at the engine’s rear. Unplug the wire harness from the mass air flow sensor by deploying the tabs on the top and bottom, and then pull the attached hose out. Push the tabs holding the housing in place to the sides and pull the housing in the direction of the engine’s rear.

At this point, the mass air flow sensor can be moved immediately. Remove the replacement from its packaging and place it where the failed sensor was once housed. Make sure to secure the tabs that hold it in place. Reattach the hose to the sensor and reconnect the wire harness to complete the job.

Replacing a mass air flow sensor Mercedes e320 or any other model—is an easy and affordable task thanks to Cape Town’s own Mercedes Spares. We take pride in salvaging quality used parts from totaled Mercedes and offering them at affordable prices. More often than not, we pull parts from brand new cars deemed unable to be driven from an accident that occurred shortly after purchase. This makes us both a leader in the Mercedes used parts industry and better able to serve you with a wide variety of parts at fair prices.

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