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Fuel Control System Operation: Notes

WARNING: This page is about a different car, the 2005 Chevrolet Optra5 and 2005 Chevrolet Optra. However, it is still accessible from the selected car via links, so may be relevant.

The function of the fuel control system is to deliver the correct amount of fuel to the engine under all operating conditions. The fuel is delivered to the engine by the individual fuel injectors mounted into the intake manifold near each cylinder.

The 2 main fuel control sensors are the manifold absolute pressure (MAP) sensor and the heated oxygen sensor (HO2S)/oxygen sensor (O2S).

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