Rough Idle

WARNING: This page is about a different car, the 1994 Plymouth Laser and 1994 Eagle Talon. However, it is still accessible from the selected car via links, so may be relevant.

Check vehicle speed sensor.
Ensure fuel pressure is correct.
Check for vacuum leak.
Check for contaminated fuel.
Check EGR operation.
Check for malfunctioning ECM.
Check for open or short in wiring and/or poor connections.