Mass Air Flow Pressure Sensor

A replacement mass air flow sensor can cost anywhere from 20 to 600.

Mass air flow pressure sensor.

A mass air flow sensor maf is a sensor used to determine the mass flow rate of air entering a fuel injected internal combustion engine. The data is used to calculate air density and determine the. In automotive applications air density varies with the ambient. A maf mass air flow sensor measures the volume of air passing through the air tube to indicate engine load.

Air changes its density with temperature and pressure. A map sensor measures the air pressure or vacuum in the intake manifold and the mass of air entering the engine can be calculated from this using the ideal gas law. In addition to testing and calibration another important factor for performance is the use of high quality rtd sensors. Symptoms of a bad mass air flow sensor include decreased fuel economy starting trouble stalling shortly after starting rough idling and jerking during acceleration.

The job for this sensor is to let the computer know how much air is in the engine. Engines that use a map sensor are typically fuel injected the manifold absolute pressure sensor provides instantaneous manifold pressure information to the engine s electronic control unit ecu. The importance of quality rtd sensors. Code p0101 means that the signal from the.

The air mass information is necessary for the engine control unit ecu to balance and deliver the correct fuel mass to the engine. A maf sensor isn t the only way for the ecu to calculate engine load and a common alternative is to use a manifold air pressure sensor map sensor instead. You ll notice if the tailpipes eject black smoke or when the engine runs rough or backfires. Dirty sensors will impact whether your vehicle starts.

As more comes in more fuel is also needed to maintain optimal ratios. The manifold absolute pressure sensor map sensor is one of the sensors used in an internal combustion engine s electronic control system. There are several types found on vehicles today. A faulty maf sensor can cause your vehicle to run too rich or run too lean.

If you are going to replace the maf yourself then i d always recommend buying an oem mass air flow sensor. If your check engine light is on and your car has any of these symptoms you can check the maf sensor with an obd ii code reader. The mass air flow maf sensor part of your vehicle s electronic fuel injection system is responsible for calculating the total amount of air entering the engine. Standard offers 100 new never remanufactured maf sensors that provide the most accurate readings and precise airflow output.

These include the cold wire hot wire karmen vortex and the vane type maf sensors.