Problems mass air flow sensor symptoms diesel

You should never use carburetor cleaner on a mass airflow sensor. However, when the MAF sensor malfunctions some faults will actually be symptoms of the root cause. When I had a stalling complaint with no set codes I would do a light tap test at the connector area and see if the RPM changed. This would display the same problems and symptoms as a defective part. The maf or air mass meter or airflow meter is the biggest cause of poor performance and economy on modern diesel engines (mainly those built after 1999). This changes the air fuel mixture and the injector on time.

MAF sensor FAQ, troubleshooting, and replacement for VW

In this scenario air bypasses the flow sensing element and you get a lean condition. I should also mention the older the part is, the more likely problems are. Contaminated Mass Airflow Sensor If there is no vacuum leaks and the air induction hose is in good shape, it's possible that a dirty mass airflow sensor is the problem. The sensor pictured on the right, converts air flowing past a heat sensing element into an electrical signal. Many types of problems may cause this light to come on, so you must have your cars computer analyzed to see if the light is related to the mass airflow sensor.

Thus, symptoms and false trouble codes indicating a sensor failure are likely. The chemicals are just too harsh and can damage the plastic. Most of the time, this buildup wont be significant enough to affect the MAF, but severe buildup can cause interference.

Symptoms of a bad Mass Airflow Sensor Mass Air Flow Sensors

These may include low gas mileage, shuddering, stalling, knocking or pinging. Even if cleaning the sensor doesn't solve all your check engine light problems it might not be a waste of time. I should also mention the older the part is, the more likely problems are. As the volume and the density of air across this heated element changes the temperature of the element changes. I have an important tip for you that I learned the hard way. Also watch the video on how to clean MAF sensors without damaging the delicate part at the bottom.

Rough idle, engine hesitation, lack of power and poor fuel economy. Any vehicle with over 20,000 miles may experience problems due to contamination buildup on the heated element of the MAF sensor. You should never use carburetor cleaner on a mass airflow sensor. Thus, symptoms and false trouble codes indicating a sensor failure are likely.