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MAF sensor in a 2006-2015 automotive diesel engine. 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 air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its ...
A fuel-injected engine may alternatively use a mass airflow sensor (MAF sensor) to detect the intake airflow. A typical naturally aspirated engine configuration employs one or the other, whereas forced induction engines typically use both; a MAF sensor on the Cold Air Intake leading to the turbo and a MAP sensor on the intake tract post- turbo ...
MAFless tuned LS engine equipped vehicles never eventuated in the United States as the C5 Corvette with the same engine was always fitted with a MAF sensor. It featured a larger MAF sensor body than the ones installed in the Australian cars, to avoid any intake restriction issues and still deliver accurate injection at all times.
Mass airflow sensor, used to find the mass flowrate of air entering a fuel-injected internal combustion engine; MAFless Tuning, a method of operating the fuel injection system on a gasoline-powered motor vehicle whereby the mass airflow meter is removed; Markranstädter Automobilfabrik, a German car-brand built from 1909 to 1923 in Markranstädt
However, there are several other common causes of damaged MAF sensors, including brake cleaner contamination, extremely dirty/contaminated filters, and loose battery terminals resulting in voltage spikes. [13] K&N has published test results asserting that its oiled filters do not cause MAF sensor failures. [14]
MAF sensor (idle trim) - 23 unk: Left lambda sensor: Blue shielded 24 unk: Right lambda sensor: Blue shielded 25 red/black: Sensor ground: Ground side of coolant, fuel, MAP, and TP sensors 26 green/white: Air bypass valve: 48-58Ω to pin 1 27 black/gray: Signal ground - 28 blue/gray: Air bypass valve: 48-58Ω to pin 29 29 orange: Air bypass ...
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