![]() The mass air flow sensor is meant to measure how much air mass is flowing into the engine intake. Both of these are sent to the ECM, where the air-fuel ratio is regulated carefully. ![]() Many modern MAF sensors also have the intake air temperature (IAT) sensor built in.ĭigital mass air flow sensors utilize a frequency output, while the analog MAF sensor produces variable voltage output. This component is located between the intake manifold on the engine and the air filter. It’s part of the car’s electronic fuel injection system. The mass air flow sensor is otherwise referred to as the MAF.
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