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Home >> Chrysler >> 2012 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (6.4L - DTCS P0522 To P1521) >> Diagnosis And Testing >> P150D-Cold Start Rough Idle - Open Throttle Start >> Theory Of Operation

Theory Of Operation

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The objective of the Dynamic Crankshaft Fuel Control (DCFC) is to reduce the fuel as much as possible during a cold start. The DCFC begins subtracting fuel from a high limit upon a cold start and keeps removing fuel in an attempt to get to a calibrated lean limit. DCFC stops removing fuel when rough idle is detected or the lean limit is reached.

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