Sounds like a good plan.

On Sun, May 15, 2022 at 7:44 PM Eric Caron <ericcaron96@comcast.net> wrote:

> Sadly,  I think it is for the 2.1 But, that will work out for the owner of
> the tool we borrowed it from.  He thought it was for a 1.9.  The
> documentation
> Though is not 1.9 but 2.1
>
>         It also talks a lot about soldering in a capacitor into the air
> flow meeter to reduce “vanagon Syndrome”. I’m trying to gently insist we
> are not at that point yet in this running issue.
>
> I don’t know what the solution is but I suspect Dennis is right that we
> need to start with the basics and go from there.  I suspect it will be that
> the last mechanics didn’t really tune it correctly or that there is a
> sneaky ground or wiring failure in the mix.
>
> As My helpers are here only a small amount of time it is helpful for me to
> have materials and a direction to follow.  Example last visit we didn’t
> really understand how to test the O2 sensor. And a lack of seals meant not
> checking the injectors. We also didn’t have the correct spray to check
> vacuum or air intake.  I have these supplies now for the next visit.
>
> But, any tips on what to have on hand is helpful.
>
> Example I have a spare temp 2 sensor but didn’t have a gasket for it.  I
> do now, but I didn’t know it needed one.
>
> I’m learning as I go.
>
> Any tips on what is helpful to have on hand?
>
> I found an ancient compression tester and now have a talking Multi meeter
> so fun will be happening.
>
> Eric Caron
> 84 Westfalia
>
>
> > On May 15, 2022, at 10:10 AM, Dennis Haynes <d23haynes57@HOTMAIL.COM>
> wrote:
> >
> > If I recall this tool was mostly for the 86 and later Digifant. It
> probably can also work on the Digi jet. Either the ECU or the harness need
> to be modified to use.
> > While you are looking for a simple easy to find and fix bullet to solve
> your woes, the Digi-Jet is still a fairly simple system and with very few
> exceptions most running problems end up being outside the fault of the FI
> system.
> >
> > For the high idle, this is always a result of some combination of
> incorrect basic settings, excess or unmetered air getting into the intake.
> In addition having a 2.3L which also has a mild cam will rarely work
> perfectly on the 1.9 set up.
> >
> > Start with checking that the throttle body is properly adjusted. It
> needs to fully close without the palte sticking in the bore. There is a
> stop screw and lock nut for this adjustment. This is extremely critical as
> your distributor has both vacuum advance and retard. The plate needs to
> close properly to close off the advance port in order for the retard to
> work properly. The distributor should also be tested that the vacuum
> operated and mechanical advance parts are working. If setting timing at
> idle confirmation is needed that the vacuum retard is in fact fully
> retarded. Warm, engine, disconnect O2 sensor and use the sensor and meter
> to fine tune AFM. Make sure warm up regulator is closing, uses a heater and
> engine case temp to close. Set timing 5 ATDC, mixture to ~.5 volt on O2
> Sensor and base idle speed 850-950 rpm.
> >
> > For the off isle stumble make sure that the closed throttle switch opens
> immediately as throttle is opened. If not you go into injector cut off at
> ~1350 rpm. Then after that O2 sensor is ignored for a number crankshaft
> revolutions. Operation will be wacky.
> >
> > Since this engine has some miles on it it would be a good idea for a
> compression and leak down test. As this combination may also be susceptible
> to detonation it is also a good idea to put a camera inside the cylinders
> and look for piston damage. Carbon in the intake ports and back of the
> intake valves can also cause running problems.
> >
> > Dennis
> >
> > -----Original Message-----
> > From: Vanagon Mailing List <vanagon@gerry.vanagon.com> On Behalf Of
> Eric Caron
> > Sent: Sunday, May 15, 2022 8:18 AM
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: ECU Digital
> >
> > So, I’m still at the start of diagnosing a running issue with high idle
> and more importantly loss of power when step-in on the gas at a stop.
> >
> > But, A friend was just handed a interesting tool he wants to try out on
> the 84 running the 1.9 ignition
> >
> > What do you know about the ECU digitool  has the name Darrel Boelher, in
> the paperwork.
> >
> > Has a long ribbon cord to take the device to the dash to watch w while
> driving and a LCD screen and lights.
> >
> > Anyone out there still using this tool and anyone know it’s history or
> usefulness?
> >
> > Eric Caron
> > 84 with 1.9 ignition
> > 85 with GW management
> >
>