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WTB..L28 Mass Air Flow Sensor


Guest mad-mike

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WARNING! Technical info to follow....

 

Seems to be more and more common today for people to throw out technical terms without actually knowing what those terms are, or mean. Not trying to throw anyone under the bus here, just trying to educate those who may read this so that when they are communicating technical info, they are comminuting the correct technical info and receiving the proper technical help. wink.gif

 

MAF, (Mass Air Flow sensor) and AFM, (Air Flow Meter). 2 totally different sensors that are often incorrectly mistaken for the other.

 

The AFM, or Air Flow Meter, as used on the ’75-’83 Datsun/Nissan Z cars is NOT a Mass Air Flow Sensor. The AFM measures the FLOW of the air, i.e the volume of air entering the engine, not the MASS of the air. The Z car AFM does utilize an air temperature sensor to help correct for air density due to temperature, but still does not directly measure the air MASS which is also affected by humidity, pressure, etc!

 

The MAF, or Mass Air Flow sensor measures the actual MASS of the air, taking into account not only the volume, but also the pressure, temperature, humidity, etc.

 

Therefore, you can clearly see that these two instruments are not interchangeable physically nor in casual or technical conversation. MAF is not AFM or vice versa. gh.gif

 

Sorta like the difference between a 2 stroke and engine and a 4 stroke. you don't call a 2 stroke engine a 4 stroke, well... because it's not. cool.gif

Edited by BRAAP
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