Check Engine Light, Engine Issues Options

[Teoll]

I have a 95 GTS and I was driving on the highway for about 2 hours with cruise set (80mph). When I was coming into the city I turned cruise off and my engine seemed to be misfiring or something like that. There was a sort of vibration and it seemed that there was no real response to when I gave it gas. It is hard to explain. This happened for about a minute as I was slowing down and coming into the city. Then all of a sudden my check engine light came on. The light then went out after about a minute of constant driving at around 35mph. Then as I slowed down for a traffic light, the light came on again and the engine was having its problem again. This happened a few times as I made it to my home. The light went on and off maybe 4 times as I drove to my house.

I was hoping that someone might have some suggestions as to what this may be. I am wondering if it is maybe my spark plugs causing my ignition timing to be off, or maybe my intake or possibly the map sensor? Any suggestions that you may have would be great. Thanks.