Stalling and rough idle...

Recently I have had an idle concern. After an hour or so of wheeling, the vehicle will start to run rough and stall or run rough right after start-up. This has only happened twice to me. I noticed when this happened both times, I was on a slight decline(not sure if its related). The vehicle will usually smooth out on its own and run like nothing ever happened. Everytime this happens, I pull the same code for p0306-misfire on cylinder #6. I have already tried changing plugs and checking for any injector leaks. Any other ideas? I checked over some TSBs with no luck. TIA.

Just a thought ... check to see if your ignition wire is arcing. The wheeling might be jarring it enough that it is grounding to the block.

pec50 said:

Just a thought ... check to see if your ignition wire is arcing. The wheeling might be jarring it enough that it is grounding to the block.

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No ignition wires. It has coil pack/strip on them.