1999 Ford E150 5.4L Engine P0307 Code: Spark Plug and Coil Replacement Not Resolving Issue

Model: 1999 Ford E150 Fault Code: P0307 Posted: 2010-08-27 18:53

I recently encountered a P0307 diagnostic trouble code on my 1999 Ford E150 with a 5.4L V8 engine. I have already replaced all spark plugs and the number seven coil pack, yet the P0307 code reappears after resetting the check engine light. The issue persists despite these repairs. Can anyone provide insight into potential causes or next steps for diagnosing this specific cylinder misfire? Any experience with similar 1999 Ford E150 models would be greatly appreciated.