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What is the firing order for a 2003 Ford Expedition?

The 2003 Ford Expedition, depending on the engine, has one of two firing orders:

* 4.6L V8: 1-5-4-8-6-3-7-2

* 5.4L V8: 1-6-5-4-3-2-7-8

You must determine which engine is in your specific vehicle to know the correct firing order. Check your vehicle's documentation or the engine itself for identification.