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Date:         Wed, 12 Apr 2006 14:16:28 -0400
Reply-To:     Jonathan Farrugia <jfarrugi@UMICH.EDU>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jonathan Farrugia <jfarrugi@UMICH.EDU>
Subject:      Re: 060412 AFM question
Comments: To: jake beaulieu <jbeaulie@ND.EDU>
In-Reply-To:  <001201c65e58$a63b8790$e1e4fe42@jbeauliexp>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed

with the advent of OBD most of the shops have ash canned their old equipment. the dealer here still has their old emissions machine but it barely works and only one or two people know how to use it. probably the easiest thing to do is to go to an exhaust shop and have them cut you in a whole for an oxygen sensor and weld in a bung then you could use an oxygen sensor to tune. all the do it yourself injection systems are going to wide band sensors for tuning as they are much more accurate than thimble type sensors.

jonathan

On Wed, 12 Apr 2006, jake beaulieu wrote:

> So how in the heck are you supposed to have any idea what you are doing to > the air:fuel mixture when tweeking the AFM if you are not analyzing the > exhaust gases right away? I have been to 5 different shops this morning > trying to find someone to measure the CO and HC in my exhaust on my 82 air > cooled Westy so that I can set the AFM (I think I am running rich). Nobody > wants to touch it. I have the Federal model motor so no oxygen sensor to > use as a guide. > > Thanks, > Jake > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of > Ryan Dunn > Sent: Wednesday, April 12, 2006 10:07 AM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: 060412 AFM question > > I noticed the same thing over the weekend! Whenever I "stabilized" it at > idle with a short screw driver, the idle would settle down. Made me wonder > if it supposed to dance around like that. > > Ryan > > "Greenamyer, William L" <william.l.greenamyer@BOEING.COM> wrote: > Over this last weekend, I did some smog adjustments. One of those was > tweeking the AFM. For those of you who have experience with the AFM, > should the wiper be moving (jitter or oscillation) of about 1/8 to 3/16 > of an inch at idle or should the wiper be pretty stable? > > William > > > > --------------------------------- > Talk is cheap. Use Yahoo! Messenger to make PC-to-Phone calls. Great rates > starting at 1&cent;/min. > > >


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