2000 Ford Windstar P0302 Misfire: Diagnosis and Next Steps After Replacing Plugs, Wires, and Coil Pack
My 2000 Ford Windstar (3.8L engine, 94,000 miles) is showing fault code P0302, indicating a misfire in cylinder 2. I've already replaced the spark plugs, ignition wires, and coil pack. The fuel injector for cylinder 2 receives power from the control module, so electrical issues are unlikely. However, the engine still knocks during acceleration—especially when starting from a stop or climbing hills—and exhibits intermittent 'misses' at any driving speed. What should I check next to resolve this issue? Any known technical service bulletins (TSBs) related to this problem?
Try swapping the #2 fuel injector with the #3 injector and monitor if the P0302 code persists or shifts. Additionally, inspect the intake manifold gasket for leaks near cylinder 2. A vacuum leak in this area can cause misfires and affect engine performance. Good luck—please update us on your findings.