PO304 code on a '98 Ford Expedition

Asked by Apr 23, 2018 at 09:10 PM about the 1998 Ford Expedition

Question type: Maintenance & Repair

The spark plugs have been replaced, as well as the plug wires. The coils and
fuel injectors have been switched. Vehicle still displays the same code. Looking
for any suggestions as to what could still be the issue

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