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Home >> Pontiac >> 2009 >> Vibe Base, 1.8 8, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 1.8L (Lay) - Introduction >> Description and Operation >> Fuel System Description >> Engine Warm-Up Enrichment
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Engine Warm-Up Enrichment

When the engine is cold, additional fuel is added in order to ensure good driveability. The level of enrichment of the air/fuel mixture is gradually decreased until the engine coolant temperature (ECT) sensor reaches a specified value.

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