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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System & Fuel System - 1.8L (Lay) - Introduction) >> Description and Operation >> Fuel System Description >> Engine Starting Enrichment

Engine Starting Enrichment

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In order to improve starting performance, fuel enrichment during start up is carried out. For a certain time after the engine is started, the air/fuel mixture is enriched slightly in order to stabilize the engine speed. The amount of compensation varies depending on the engine coolant temperature as measured by the engine coolant temperature (ECT) sensor.

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