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Catalytic Converter Replacement

After dealing with a ton of no-start, misfire, and excessive rich conditions, I believe my passenger side catalytic converter is done for. My 05 Expedition EB 5.4L 3V 4x4 takes some time to start. It cranks for a good 5 seconds when cold starting and has a rough idle in drive gears and...
- Jake Oleszak
- Thread
- May 4, 2019
- 5.4 catalytic converter cylinder 2 fuel hard start idle misfire motorcraft rough rough idle
- Replies: 7
- Forum: 2nd Gen Ford Expedition Engine & Performance

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