I had the plugs/wires replaced around 10k ago (AC Delco parts), cleaned the throttle body out extremely well (I did not remove it though) the last time I changed the air filter (around 4k ago). Neither of these helped the problem. I plan on changing all the coil packs this weekend and I will clean the terminals during the replacement and see how it goes. I am a bit confused about the fuel filter though, I was told that my car doesn't have one.