Date: Sat, 6 Mar 2004 20:13:27 -0500
Reply-To: Jonathan Farrugia <jfarrugi@UMICH.EDU>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jonathan Farrugia <jfarrugi@UMICH.EDU>
Subject: Re: more trouble with Billy
In-Reply-To: <10b3dd910b36dd.10b36dd10b3dd9@ou.edu>
Content-Type: TEXT/PLAIN; charset=US-ASCII
Warren
one of the nice things about the digifant system is that basically the
only tool you need to diagnose the system is a multimeter. thats beside a
fuel pressure gauge, timing light, and compression tester. should you
need any help using the multimeter, ping the list there are may people
here that can help walk you through using a meter on the digifant system.
jonathan
On Sat, 6 Mar 2004, Warren.K.Lail-1 wrote:
> Hi Jonathan,
>
>
Thanks for your input. I have not taken a very systematic approach
thus far, but it looks like its about time to do that. I neither own a
multi-meter nor know how to use one, but I suppose I can get one and learn how.
>
I'll try to get my hands on a Golf-Jetta Bentley and see how the
digifant system is analyzed there.
>
> Thanks again.
>
> Warren Lail
> 88 Westy "Billy Bones"
> 87 GL (cannibalized, not running)
>
> ----- Original Message -----
> From: Jonathan Farrugia <jfarrugi@umich.edu>
> Date: Saturday, March 6, 2004 6:42 pm
> Subject: Re: [VANAGON] more trouble with Billy
>
> > Warren
> >
> > i haven't been following your saga with billy very closely but i
> > have this
> > to say. i don't know if you have done this yet but, i believe you
> > need to
> > take a systematic approach to this problem. get out your bentley
> > and your
> > multi-meter and test every digifant component and compare it to
> > the specs
> > in the manual. a good additional resource in my opinion is the
> > bentleymanual for the 85-92 golf and jetta. they used the
> > digifant system and
> > the treatment of the digifant system in the golf manual is MUCH better
> > than the treatment in the vanagon manual.
> >
> > what i have done in the past is to make myself a "cut" sheet.
> > this is a
> > sheet(s) of paper with all the specs for the system. this helps
> > to reduce
> > needing to flip through the manual while trouble shoot.
> > additionally mark
> > the page numbers in the bentley next to your written specs on the
> > "cut"sheet for quick reference.
> >
> > once you have verified all the components, verify the whole wiring
> > harnessfor continuity and resistance. the final step is to check
> > for resistance
> > drops in the ground system. do this by attaching one end of the
> > meter to
> > the negative post of the battery and then using the other probe on the
> > meter to check all the grounding spots and various other places on the
> > engine and transmission. in a properly grounded system there
> > should be
> > close to zero resistance between the battery negative and any of the
> > other ground points. a note here to a degree the quality of the
> > readings are somewhat dependent on the quality of the meter, i
> > suggest a
> > fluke for most people.
> >
> > if you have done all of this and you haven't found the problem
> > then you
> > will need to move onto intermittent driving problems or faults.
> > this is
> > where the digi-tool comes in handy. although i haven't needed one yet
> > with this procedure. :)
> >
> > jonathan
> >
> > On Sat, 6 Mar 2004, Warren.K.Lail-1 wrote:
> >
> > > Hi Malcolm,
> > >
> > > I'm certainly interested in a Digi-Tool. I checked out the
> > website but
> > saw no info on sales. I tried to follow the link to Darrell's
> > site, but
> > it kept timing out. Any other links to Darrel's site?
> > >
> > > Thanks
> > > Warren
> > >
> > > ----- Original Message -----
> > > From: Malcolm Stebbins <mwstebbins@yahoo.com>
> > > Date: Saturday, March 6, 2004 1:08 pm
> > > Subject: Re: more trouble with Billy
> > >
> > > > Maybe you should get Darrell Boehler's digitool
> > > > to help you diagnose the problem. Try:
> > > > http://www.251.org/digitool.html and search the
> > > > archives for digitool" This is truly a great
> > > > invention for you EFI types. Malcolm
> > > >
> > > >
> > > > --- "Warren.K.Lail-1" <wlail@OU.EDU> wrote:
> > > > > Oh, I was so proud of myself this afternoon with my
> > > > > 'timing success' that I took ole Billy out for a
> > > > > drive. Guess what - now he's skipping worse than
> > > > > ever.
> > > >
> > > > __________________________________
> > > > Do you Yahoo!?
> > > > Yahoo! Search - Find what you?re looking for faster
> > > > http://search.yahoo.com
> > > >
> > >
> >
>
>
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