Mass Air Flow Sensor or MAFs are also known by many different names, but the job they are tasked with is the same. Inform your vehicle's ECU or PCM of the real time values for the air that's entering the engine. There's a variety of different MAF sensors, which in turn means different way for the air mass sensor to read your air.
Can't find your Mass Air Flow Sensor Below? Try searching for your year, make or model. Good examples are "1997 Mitsubishi Eclipse Mass Air Flow Sensor", or "1999 Chevy Camaro Mass Air Flow Sensor" as search terms.
No matter what kind of MAF you own, from hot wire to Karman to membrane type MAF sensors, it still needs to read the air values to transmit them to the ECU.
In conjunction with the air / fuel ratio sensors and oxygen sensors, the ECU then can accurately deliver the right amount of fuel. Your ECU uses the MAF typically as a reference for open loop operation, while your oxygen sensor or 02 sensor controls closed loop operation.
For most late model EFI equipped vehicles, you'll find a hotwire, karman or vane type mass air flow sensor. With a voltage range between 0-5 volts and a built in Air Intake Temperature (IAT ) Sensor, your ECU has all the information required to operate your engine efficiently and smoothly.
When your MAF, MAS or Mass air flow sensor encounters problems or begins to fail, your On Board Diagnostic system will recognize the problem and light your check engine light.
The Mass Air Flow Sensor (MAF) on your 2.4 liter KA24DE equipped Nissan Altima is mounted to the air box by four 10mm bolts. These bolts screw onto the air filter housing, but you will not need to remove any of it to test your MAF.
The part number for this air flow sensor is 22680-70F00, and as expected there’s quite a few interchange part numbers. This 2.4 liter KA24 engine is found in many late model Nissan vehicles, from the Xterra, 240SX and Nissan pickup trucks.
The mass air flow sensor in your 3.5 liter VQ35DE Nissan or Infiniti engine is mounted to the intake pipe, as part of your airbox. You can access the MAF plug by simply locating your intake pipe, the MAF adapter and sensor and unplugging the six pin connector.