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Sensors & Electrical

Sensors and electrical components on the 2001–2002 5.9L Cummins play a crucial role in engine management, monitoring key parameters and sending data to the ECM (Engine Control Module) for optimal performance. Common sensors include the MAP (manifold absolute pressure) sensor, IAT (intake air temperature) sensor, cam and crank position sensors, coolant temperature sensor, and throttle position sensor.

These sensors help regulate fuel delivery, boost pressure, timing, and engine protection. The electrical system also includes wiring harnesses, connectors, and relays. Keeping these components in good working order is essential for reliable engine operation, diagnostics, and performance upgrades.