So i have an 03 pathfinder. Thing runs like a champ. I let truck sit for about 3 months and had a few problems after I started using it again. Truck has 206000 miles on it. The truck was idling like crap and had misfire codes. Also showed a code for maf sensor and swirl control valve. I put new plugs in. Changed fuel filter. Fuel pump was checked by mechanic and is fine. New maf sensor and new coil packs were installed. Truck runs good except when I give it a hard throttle. It starts bucking until I let off gas and will go all the way to redline but only under soft acceleration. They say o2 sensors are fine but may be the cats. Any suggestions
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