Did you adjust that screw ? If yes and ist still sometime stays at the higher idle, it could be the same problem that I had lately. The shaft of the butterflys turns very smoothly - as long as the engine is off and no vacuum / air pressure pushing it. But as soon as the engine was running, the shaft didn't fully return to the idle position. I guess the bearings of the shaft are worn out a bit. I could solve the problem (at least for a certain time) by readjusting/bending the spring on that arm - so the spring pulls it a bit stronger in the idle position. If works for now and maybe fo thr next few years, but I am sure somewhen in the future I have to replace that butterfly assembly. I bet there are many cars out there which have the same problem as high idle is very common.... Elvis & 6548 > So far I passed all of that, > However, I have a high idle situation that I didn't think was > relevant and now, well, I am grasping at straws. If I push the switch > with a screw driver it will return to below 800, but when I let off it > rises to about 1150. I've tried adjusting the screw on the arm > attached by a shaft to the throttle spool that pushes that switch but > it just does not see to go far enough to actuate the switch. There is > a small amount of play on that arm, too. Could the switch be bad and > too hard for the screw to push? Is something out of adjustment? > > Thanks, > Matt > VIN 16816 > > --- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@...> wrote: > > > > Make sure the timing is set right, and the vacuum advance is hooked up > > correctly and working. On the Island setup there is no mechanical > > advance. Check for vacuum leaks. You may have to adjust the mixture > > but do not do it to compensate for vacuum leaks. They have to be fixed > > first. Pull the output pipes from the turbos to the intake manifold > > and if the insides are oily you have to have the leaky turbo rebuilt. > > You may need to replace the silicone hoses and clamps on the Island > > turbo plumbing. They MUST not leak. Check the control hoses too. Any > > leaks will allow you to overboost. Pull the oil fill and you should > > not see any pressure coming out. You can hold a piece of paper over > > the opening to determine if air is coming out of the crankcase. You > > should be running synthetic oil on a turbo car. > > David Teitelbaum > > vin 10757 > > > > > > --- In dmcnews@xxxxxxxxxxxxxxx, "M. P. Olans" <mpolans@> wrote: > > > > > > OK, > > > This is frustrating. Two years ago I had to do a full tune-up to > > > pass emissions. This year, same thing. However, even after the > > > tuneup, my CO is still too high. NOx and HC's are really low so I > > > know the O2 sensor and cats are doing their job. However, I am at a > > > loss here. I did plugs, wires, cap, and rotor. Gapped them to .025 > > > since the manual said .024-.028 IIRC. Car runs great and has power > > > just like before. It is an Island Twin Turbo. So, any hints? I'm > > > running about 25g/mile CO and the limit is 20. When I got it from Rob > > > it tested at 11 g/mile, and then after the first tune-up it was also > > > 11 g/mile. What am I missing? I cleaned my K&N air filter last > > > month. I haven't changed my fuel filter in probably 4 years, but how > > > could that affect emissions? > > > > > > What am I missing? > > > > > > Thanks, > > > Matt > > > The Arizona DeLorean Club > > > www.az-d.org > > > > > > > > > > > > -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer 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/