Hey I've got an 2001 Z06.I started her up Friday morning,while sitting there the Idle started searching,then smoothed back out?I backed out of the garage & started down my street,the car started to stumble then catch it self,I shifted in to 2nd and it stumbled again.I turned around and took the car back home,jumped in my other car and ran all my errands..Got back home started up the Z and it drove normal i went drove over town.stopping and starting,turning car on & off again problem never came back??Saturday morning started car up same problem came back.turned car off & let sit for about 10 mins started and she ran normal all day???This morning started car up,went driving problem was back!! turned her off for a few mins and she runs fine????Any help you guys can give would be great.I've got the service manuals & I suspect cold start circuit.Anyone had this problem before.