Roger roger. I didn't think the valve would completely stop buzzing if the CO screw was wrong. I just thought it would buzz incorrectly. More for me to check. Thanks. :) --- In DMCForum@xxxxxxxxxxxxxxx, "Dave Stragand" <dave.stragand@xxxx> wrote: > Rich, > > Bear in mind that the frequency valve may stop buzzing if it's actually > functioning correctly, too. Since the cleaning, your overall mixture may > have changed as things clean out. Have you adjusted the CO mixture screw > again to check? > > Remember, the best way to find out what is wrong with the car is to ask it, > and listen to its answer. It sounds wacky, but it's the truth. Ask the > right questions and your car WILL tall you what's wrong. > > Also, remember the principle of Occam's DeLorean: All other things being > equal, the simplest solution is usually the correct one. It's natural for > us to blame problems on components we don't understand -- everyone does it. > You just have to break down the situation into the right parts. > > First off, you have to correctly define the question. The problem is not > "what is the problem with the lambda system" -- it's "why is the frequency > valve not buzzing when it should be buzzing". The main two hypotheses that > can be formed from that question are: > > - The system IS functioning as designed (yes, that is a possibility, and > remembering the principle of Occam's DeLorean, is actually the probability) > - The second is that it is NOT functioning as designed. > > Then you need to come up with tests to try out each hypothesis. Here's a > couple of things to try to test the first scenario: > > - Change the CO mixture and note the results. > - Try checking the function of the O2 sensor per the manual... open the > circuit, and do the test with the AA battery > - Reread the section of the tech manual and come up with your own questions. > > For the second scenario, I'd try: > > - Check all of the electrical connections and grounds. > - Run the tests per the manual on the frequency valve. > > As you see the results of each test, more tests may come to mind. Try them > out, and see what you discover. > > That's the scientific method of DeLorean maintenance we talked about when > you were working on the heads. You have become the DeLorean scientist > already -- you just need to get back to it. > > The secret to Zen Maintenance is not a "knack" or a "gift"; it's simply > putting enough pieces together to see the big picture. There is a perfect > DeLorean engine that you are coming to understand. Yours, at present, does > not match that mental picture, right? So start to look at it from all the > different angles, and see how yours differs from the perfect one. Study the > differences, and you will find an answer to your question. > > Okay, that's enough of the Zen ramble for today. =) > > -Dave > > > [Non-text portions of this message have been removed] Yahoo! Groups Sponsor ADVERTISEMENT <http://rd.yahoo.com/SIG=12cprjnbm/M=267637.4116732.5333197.1261774/D=egro upweb/S=1705126215:HM/EXP=1068664873/A=1853618/R=0/*http://www.netflix.com /Default?mqso=60178338&partid=4116732> click here <http://us.adserver.yahoo.com/l?M=267637.4116732.5333197.1261774/D=egroupm ail/S=:HM/A=1853618/rand=989028309> To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
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