Your CEL sounds like partially clogged EGR or possibly O2 sensors. The cleaning mentioned above will take care of the clogged EGR passages. The O2 sensors do get weak and fail after a while, giving the symptom you mentioned. On your 95, you can find out the fault code by putting a jumper in the test connector and counting the CEL flashes. Or take it to a mechanic or even autozone to get the code scanned. The diagnostic connector is on the drivers side, just behind the strut tower.
