I've had nothing but trouble with my ignition system for the past month. New coil, plugs, wires, opti, etc. I was driving the car after getting it fixed again, and it had no power, could barely get past 2000 RPM's unless I shifted it myself. Gave it to my cousin who runs a shop and he thinks (as I did also based on the way its felt the past 2 days) that the car is down a cylinder. My question is, what would cause the cylinder to stop working yet not throw the SES light?

 

OBD1 car's are rather insensitive. I've had misses due to a burnt spark plug and no SES light ever came on.

Since you've tried everything in your igniton system, try your computer next. It might have gotten corrupted or something.

 

Alright, that's the first place I'll look it there's no problem with the plugs and wires