2nd problem first. Did you unhook your battery at any point, during repairs? If no, go out and unhook it for a about 1/2 hour on that car. This will reset your fault codes to zero on the computor.
Then we can start fresh.
After rehook of battery, start and let warm up for about 5 mins. Then go for a short cruise but try to get to all driving ranges(stop/go, min speed limit, higher speed etc.). Do you get service engine light, how does your car perform? Are your drive belts as tight as they should be?
Usually rough idle if it just appeared will have something to do with whatever you have done.
Lets start there.
Let us know what happens and I can go through it with you on my Cavalier.
Sunday, December 17th, 2006 AT 10:11 PM