After I installed my brand new opti my car idled really low. After it ran for awhile I killed it and it started back up. After killing it and restarting it a few times it is now running great! Was that just the computer or what?

 

may have been - it takes a bit of driving around for the computer to completly relearn - if it keeps on doing it get it scanned.

 

just yestertday had the same problem (very low idle) with a 2000 chevy pu. It was the battery cables were loose. It ran fine after I tightened them. Might not have anything to do with your problem but its worth checking. Alan

 

Mine did the same thing when I installed my new opti, wouldnt even idle for about 15 mins I had to hold it at 2k after about the 15 mins she was back to normal....