Vacuum leak. Make sure you reattached the charcoal canister lines properly: - Line from the tank goes straight into the canister (not through the diaphragm on top) - Purge signal from under the throttle plates goes to the diaphragm - Evacuation line to the cold start tube is opened by the diaphragm on top Also ensure your diaphragm doesn't have a hole in it. A vacuum leak actually causes the engine to run lean. That's what kills your fuel economy -- adjustments are made to bring fuel/air mixture back to normal at idle (high vacuum), which then translates into over enrichment at throttle. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, Enid/Jeremiah <hispanicangeleyes@xxxx> wrote: > > Ok, here's the story. > > I wanted to put my A/C belt on. Through this process > once I was done, I was reconnecting the three lines > that go from the "coal canister" in the left of the > fiberglass body to their individual placements. Got > two out of three hooked up - last one went under the > intake. When I connected this one, the hose on the > right was hanging in my hand. I realized the only way > to reconnect it under the intake was to pull the > "elbows" off the front of the intake. So I did this > and reconnected the last line. Put everything back > together the way I found it to a "t". > > Started the car, runs fine when warming up from > 100-160 - oscillates a little for 1-2 mins as normal, > then idles perfectly (I'm one of those "Non-Lambda > system" owners - O2 sensor is unhooked for a "smooth" > idle right at 800 rpms or so). Now, my problem is > from 160 (first unmarked line) to 220 - the car begins > to RE-oscillate - as if it's running too rich while > warm. It will do this until the cooling fans come on, > then of course it'll stop oscillating due to a load > being put on the engine. Once the fans turn off, the > engine will slowly begin to oscillate again gaining > with the oscillations becoming stronger until the fans > come on again - over and over and over. > > The idle once held perfectly steady in all gears, now > it does this. In "D", it does still hold steady, but > in "P" it does all I described. I don't know a single > thing I could have broken. The only lines I remotely > tampered with are the 3 black ones that go over the > A/C Compressor. > > One thing I have noted is if I disconnect the bottom > black line off the cold start valve, the engine will > idle perfectly in all gears, so somehow it has > auto-enriched itself. I don't know how, and I don't > know what to check to lean it back down other than of > course the mixture screw. Any ideas would be > welcomed. Thank you. > > Jeremiah > > > > __________________________________ > Do you Yahoo!? > Yahoo! Personals - Better first dates. More second dates. > http://personals.yahoo.com 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/