Thank you all very much. Now I know where to look. I suspected the temp sensors before when I was driving to class, and when I would get onto a bridge the car would act a little funnier (concrete temp on bridge different than other road). This could be mere speculation. Also, I think the cat is getting fried and could be causing the severity. Fuel pump is someting I will look into as well, but to me it seems more of a sensor problem at this point. As you all know, I've already spent much on preventative maintenance/guesswork. I can't explain enough how much I appreciate the few minutes you all took to read and respond with very thoughtful suggestions.