2001 Pathfinder SE 4x4 with 163,000 miles. In the past couple years the following has been done. New tires (85% remaining) new front rotors and pads, new calipers, new struts, new ball joints, new control arms, new rear brake drums, brake cylinders and brake pads, new shocks, new upper and lower trailing arms, new panhard rod, new windshield, new battery, new alternator, new starter, new radiator, new idle air control valve, new mass air sensor, new front wheel bearings, new sunroof motor. The truck has some cancer on both sides at the rear or the rocker panels, I have two (new in the box) aluminum rocker panels that can be installed with no welding. Truck has a vinyl wrap that is showing sings of wear on the hood. I have had a check engine light for the past few months that indicates the need of a new "Swirl Valve". I have put two new one on but light remains. The problem is most definitely in the vacuum system.