Warren,

If you have not already done so check the spark plugs to see if any or all are fouled. If only one is dirty/fouled it could be something simple like a stuck injector a bad plug or plug wire.

Check the temp 2 sender as well. It is notorious for causing this problem.

Gary

"Warren.K.Lail-1" <wlail@OU.EDU> 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
>> > >
>> >
>>
>

--
Gary McEachern
Reading, Ma
'90 Westy Subavanagon
'87 Wolfy Subavanagon

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