That damm air tube is a common source of vacuum leaks. I have seen cars where the end of the tube is mangled, the brass cup that holds the "O" ring is mangled, and the "O" ring is floating on the tube not sealing to the housing. Another common area for vacuum leaks is all the little hoses on the front of the motor. When working in that tight area it is easy to knock things loose so whenever you work in front of the motor you have to look around and make sure everything is still connected when you are done. The other common source of vacuum leaks is injector seals that are hard. They should be soft so they still seal. I have found "uncommon" leaks too. On one car the plastic tube that carries vacuum to the mode switch had a hole rubbed into it under the center console. On another car the large vacuum hose going to the brake booster had a hole in it. The moral here is you have to test ALL the vacuum hoses. On a 25 year old car they should all be replaced anyway. If they are not pliable and soft then they won't seal. If they get real hard they can crack. Don't forget there is a vacuum resovoir inside the left rear pontoon. Vacuum hoses too. A bunch of small leaks add up to a lot of air. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "Tom Tait" <TTait@...> wrote: > > I spent a lot of $ working on the same problem, I had a vacuum leak. > Once fixed everything was perfect. Mine was the metal tube that runs > into the bottom of the air flow meter assembly from the idle speed > motor, yours may differ. > > -----Original Message----- > From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf > 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/