List: I think I may have this one fixed. Unfortunately it wasn't one of those "smoking gun" solutions, but everything seems to be better. What I found was the wire coming off of the ignition resistor was shorting out to ground. I'm not exactly sure how the engine was able to run fine in spite of this, but it did. Since fixing this everything appears to be better, although something tells me I haven't seen the last of this problem. Maybe the electrical short, which didn't blow any fuses, caused damage to the RPM relay, specifically the 555 timer chip. Then again I think that would cause complete failure, not occasional failure like it was before. At any rate, I want to thank everyone who helped on- and off-list: Rich A. Steve S. Dave S. John H. Warren W. Harold M. Mike C. And anyone else I left out or who posted after this. Thanks again, Todd Nelson 1561, Vermont http://www.rit.edu/~tan5732 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/