Wow, thanks for the quick response guys! The problem has been intermittent until a few days ago. Started running rough again, so I changed the filters (Tuesday). When the problem happens, the car idles rougher, trans shifts less smoothly and less power overall. Motor mounts are in ok condition, however my engine shock bushings are shot on the drivers side from when I replaced the oil cooler lines (replacing soon). I just went outside and switched the supply and return lines. Did not see any difference, still idling pretty rough. Thanks for the help!