Hey Scotty,

1997 Nissan Pathfinder 4WD auto, 180,400 miles and no codes. 

Vehicle seems to idle a bit rough when at lights and idling in park. Nothing extreme but you can feel it in the vehicle. Ran my scanner and saw the short term fuel trims around 10 percent and long term around 9. For both. 

The short term decreases when I raise the Rpms. In addition I hear a bit of pinging when accelerating. 

This two symptoms showed up around the same time for about a month now. 

I have new plugs, distributor, maf, leads are two years old, ETC sensor, fuel filter two years old, recently did pressurized fuel injector cleaning, new air filter, changed most vac lines that were visible, cleaned throttle body few months ago with new gasket, and a tps sensor (I adjusted within spec)