What Does Map Sensor Do
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What Does Map Sensor Do
Where are these sensors located? Map sensors are frequently used in engines that inject fuel. What does map sensor do?
3 signs of a bad mass air flow sensor. When the throttle is wide open and air is rushing into the intake manifold (causing a drop in pressure), the map sensor signals the engine computer to send more fuel. How many wires does a map sensor have?
When the engine is off, the absolute pressure inside the intake equals atmospheric pressure, so the map will indicate about 14.7 psi.
The manifold absolute pressure (map) sensor's job is to let your vehicle's fuel injection computer know the pressure inside the intake manifold. What does a map sensor do? Basically, a map sensor reads the amount of air pressure in relation to vacuum inside the intake manifold, either directly or using a vacuum hose. The map sensor converts engine vacuum/manifold pressure to an electrical signal so the computer knows how much load the engine is under.
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