2011 Dodge Power Wagon P0305 Misfire: Causes, Fixes & Budget-Friendly Solutions
My 2011 Dodge Power Wagon is experiencing stuttering, hesitation, and shaking. The check engine light is on, and AutoZone diagnosed a P0305 code indicating a misfire in cylinder #5. While I replaced the coil pack, which initially reduced the shaking, the problem returned after driving longer. After disconnecting the negative battery cable to reset the light, the warning came back and symptoms reappeared. With a tight budget, I'm looking for affordable troubleshooting steps—could it be the fuel injector? I need clear, factual guidance without overspending.
Which engine model? P0305 indicates a misfire in cylinder #5. Possible causes: > Ignition: No spark — check the spark plug; look for black (wet), dry, or tan color. > Fuel: Injector not pulsing, leaking, or clogged. > Mechanical: Low compression or vacuum leak. Start by removing and inspecting the #5 spark plug. If replacing, use OEM-quality plugs—avoid cheap alternatives. Add a fuel system cleaner like SeaFoam or Techron. Perform a fuel pressure test and monitor for drops (e.g., X psi in 5 minutes) during a KOEO (key-off engine-off) condition. Run a compression test on cylinder #5. Check for vacuum leaks. These steps are cost-effective and can identify the root cause without expensive repairs.