Date: Wed, 12 Apr 2006 13:37:42 -0500
Reply-To: jake beaulieu <jbeaulie@ND.EDU>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: jake beaulieu <jbeaulie@ND.EDU>
Subject: Re: 060412 AFM question
In-Reply-To: <Pine.LNX.4.64.0604121412130.380@arkanoid.gpcc.itd.umich.edu>
Content-Type: text/plain; charset="us-ascii"
Yeah, all the shops told me that exactly that, although I have no idea what
OBD fuel injection means. I have already welded in an O2 sensor bung. I
had intended to use it as a port to access the exhaust gases for CO and CH
measurements, but maybe I think I'll take your advice and drop an O2 sensor
in there. Does the O2 sensor need to receive 12V power, or does it generate
its own voltage?
Thanks,
Jake
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
Jonathan Farrugia
Sent: Wednesday, April 12, 2006 1:16 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: 060412 AFM question
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
>
>
>
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