2007 jeep rubicon wrangler 3.8l motor manual 6sp, 125k miles Code p0300 multiple misfire NO other codes thrown....

Symptoms: underpowered Misfire Backfiring Acts this way at idle or under load or higher rpm

So far new parts Coil, plugs, wires, all 4 02 senso...

FIX posted 1/11/2016

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