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Does the MAF sensor read the intake air temperature as well? As from what ive understood, the MAF sensor works by sending varying currents to heat the probe to a certain point (what is this certain point?) as it is cooled by the incoming air. Does it calculate the intake air temperature based on how much current it sends? Is that how the MAF works?
Many MAF sensors nowadays include a IAT (Intake Air Temperature) sensor, so, while it is very likely you will have them both together as a single component, it is not always the case. The purpose of the MAF sensor (Mass Air Flow) is to measure the volume of air passing getting into the engine, it's installed right after the air filter and before the throttle body. It usually has a "hot wire element" which heats up because it receives a 12V current from the alternator, then, depending on how much air is flowing through the MAFs the hot filament will get cold (proportionally) and that produces a voltage drop, which the computer receives through a 5V "signal" line which it uses to interpret how much air is coming into the engine (this 5V signal is the one that will drop as the hot wire cools down). The idea is that the computer needs to determine how much fuel it has to inject in order to achieve stoichiometry (which is a 14.7:1 air fuel ratio) to ensure complete combustion.
Thanks Reiman!
