I've seen several DeLorean's do this (my own included) and the solution was one of these two: - Clogged CPR screen - Mixture mildly too lean, which was my problem Make sure the hose inlet screen is clean in the CPR (it's easy to clean up), and fix any vacuum leaks that may be causing your mixture to lean out. Finally, double check the mixture screw with an exhaust gas analyzer, and don't forget to plug the adjustment screw hole. I should note, in all the cases I mention the car only ran rough when cold for a few seconds, up to maybe 2 minutes, only during acceleration. Jake Kamphoefner 1063 Nathan Sobieralski <valleyrat12@xxxxxxxxx> wrote: My car will do this some times. I am assuming it is a tempermental warm up regulator. Nathan --- In dmcnews@xxxxxxxxxxxxxxx, "drumminscorp" wrote: > > I have read just about every post I could find on this subject but not > able to solve the problem. Car starts well. Idles fine when cold. Step > on the accellerator it coughs and tries to stall. About the time that > the vacuum cuts out from the warm up regulator the car runs fine (I > monitored it with a vacuum guage). I checked for vacuum leaks in that > area and do not have any. Car pulls almost 20" vacuum. I have replaced > the Idle speed computer and the cold start regulator. Any suggestions? > To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links [Non-text portions of this message have been removed] To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/