Nathan, Did you clean the ground on the RH trailing arm bushing really good. A jumpy tach is a sure sign of an intermitent ground problem. Dennis --- In dmcnews@xxxxxxxxxxxxxxx, "Nathan Sobieralski" <valleyrat12@...> wrote: > > Hello everyone, > > I noticed this when I took the D for its weekly drive. After I started > the car I turned the fans on to "3". The tach proceeded to jump up > into the 3-4000 range and oscillate back and forth, like it was > exaggerating my slightly hunting idle. What the heck? If I turned the > vent fans off the tach would go back to normal or if I revved the > engine it would go back to normal. After my drive it would not repeat > the same behavior even with the AC and headlights on! Obviously this > is an electrical issue but the batt reads 13 volts at idle. I have > cleaned millions of grounds. Any ideas? > > Nathan > 2277 > 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/