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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 350 (Gas - DTCS P0456 To P0571) >> P050B-Cold Start Ignition Timing Performance >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2010 Dodge Charger and 2010 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

Spark adjustment during a cold start is intended to provide quick response to idle speed variations. The PCM monitors spark advance on a cold start over a period of time, then compares the average spark advance to a threshold.

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