'96 Corsica 2.2L Idles rough, runs fine.

[mcrosby]

As stated in the title, the car will start everytime but idles very rough. When you begin to move, after starting the car, it feels like the engine is missing badly, although the service light does not come and blink. After it warms up, it will stop the feeling of missing but still idles rough at a stop light. While driving, there is rarely any indication that a problem exists, it has good power and acceleration. Occasionally, you can feel it buck as you drive, but that is seldom. What could it be? I have replaced the IAC, cleaned the intake of all the carbon, and replaced the gasket. Thanks

[richtazz]

How old are the plugs and wires?

[mcrosby]

The plugs are two years old, and the wires are about a year old.

[CaptainTrips]

My 93 corsica was running rough after i had unhooked the battery, later i found it has an idle relearn process. u can read about it here...
http://www.corsicas.com/technicalfaq.html#5
Good Luck

[nates90]

Does anyone know if this actually works?

[jsgold]

If your car is missing this idle re learn won't help....my guess is you have a weak coil. Common problem. best way to check is to check each wire, one at a time and see how far the spark will jump. What you should see is a blue spark that will jump 2-3". Be carfeul when doing this. What happens is that one coil will get weak and one side of it will spark blue, maybe half of the others and the other will spark a weak yellow spark. You have two coils. if you discover one is weak replace them both. They only run about 20 bucks each.