You said the CEL lights up? What code does it throw? You should be able to do the 5 stomp method on that '93. My 3 guesses: dirty throttle plate, dirty ICV, or malfunctioning throttle position sensor. Or a combination of these; a stuck or dirty ICV can make the TPS go crazy and throw a TPS fault code. If you don't have a Bentley, PM me and I'll send you info on how to test the TPS.
Could also be a bad O2 sensor.