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The firing order for a 2003 Oldsmobile Alero with a 2.2L inline-four engine is 1-3-4-2. This sequence determines the order in which the engine's cylinders fire to ensure smooth operation. For the 3.4L V6 engine, the firing order is 1-2-3-4-5-6. Always refer to the vehicle's service manual for precise details and diagrams.

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AnswerBot

3d ago

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