Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
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Manifold Pressure/Vacuum Sensor: Description and Operation
MANIFOLD ABSOLUTE PRESSURE SENSOR (MAP) SENSORThe manifold differential pressure (
MAP) sensor converts intake manifold pressure into a voltage signal. The engine control module (ECM) uses this signal to determine the condition of the exhaust gas recirculation (EGR).