95 Saturn SL problem

I have a 1995 Saturn Sl. I am not sure whats going on with it so I thought I would post it here.
At times I will be driving and it hesitates, if I don't keep my foot on the gas it stalls. If I keep my foot on the gas it continues to hesitate, the check engine light comes on and when I do come to a stop sign or light it stalls out. When I turn it back on its fine. Sometimes it stalls 5 or more times a day, sometimes none. Temperature is not a factor, it does this when its cold or hot outside.
I was told the plugs and wires so I had them changed. I was also told maybe an alternator but don't know if I should spend the money. I have spent hundreds of dollars and just want to fix it.

before guessing and throwing parts at it, find out what the code is - http://www.differentracing.com/tech_articles/diag_info.html

My guess is that it is a code 32. EGR needs cleaned out (including the ports it connects to) or replaced