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It could be a couple of things... First thing is have your computer read by a scanner. Auto Zone will read codes for FREE. And go from there. I had a similar problem on my 1998 Ford Expedition XLT, and it ended been bad spark plugs. And since I have the 4.6L on mines I had to change plugs and wires. Problem was fix. The 4.6L only has 2 coil packs too... But, since you have the 5.4L it could also be bad coil packs... There 8 coil packs on the 5.4L.

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17y ago

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