Confused and In Need of Help

Well if the check engine light is coming on its probably setting a code in continuous memory. You can check that yourself to see what code it gives. I forgot where the link to the procedure is, so check the FAQ and hopefully someone will come along with a link.

A while back I had to change the Throttle Position Sensor (TPS) on my car. It was having similar symptoms to yours. It would work ok sometimes and sometimes it wouldnt work so well. The check engine light would also come on intermittently. It got a little worse over time (I was waiting for the part to come in) and right before I replaced it, it wasnt driving well at all.

Regardless, checking your code is the place to start.

edit: I think this link will be helpful. http://www.dalidesign.com/hbook/eectest.html

Go buy a scanner for 25.00 that plugs into the diagnostic port on the back side of the passenger side fender,I use a Actron...It will spit codes both audible and visual, with a LED light and beeps...You plug it in...flick the switch, turn your key to the On position, flick the Test switch in the scanner and it spits the memory codes...You can do it multiple times for repeatability....I would start with the codes first...Most auto parts stores do it for free...The tool is well worth the 25.00....I got mine at Sears in the auto section...
Have you tryed this type yet???