Date: Mon, 26 Apr 2004 23:24:14 -0400
Reply-To: Eric Zeno <vw4x4@FYI.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Eric Zeno <vw4x4@FYI.NET>
Subject: Re: Actual Vanagon content!!
In-Reply-To: <BAY10-F977ycX0M3ZwE0002728d@hotmail.com>
Content-Type: TEXT/PLAIN; charset=X-UNKNOWN
Mark, etal,
The more I think about this, the more I think this is not a good idea.
The engines are not mechanically the same: different cam, different
bore/stroke, power range, intake, exhaust, etc. all this would change the
maping of the engine computer. Changing this maping is a major undertaking
in a lab. The timing being off is just the tip of the iceburg. Forget
this idea.
Eric 86-VW4x4
vw4x4@fyi.net 86-SS Syncro
Pittsburgh, PA USA 1936-Chrysler
92-Jetta GWC
www.fyi.net/~vw4x4/vw4x4.htm
On Mon, 26 Apr 2004, Mark Seifert wrote:
> I did some searching through the archives last night on this subject. There
> was some guy who says he's done this, but he didn't elaborate much, so who
> knows if he's just blowing smoke. Anyway, it looks like that knock sensor is
> the only major difference between the Vanagon and Jetta systems. If you
> could somehow trick the jetta computer, using the correct resistance of a
> knock sensor that is not sensing any knocks, maybe it would work. There are
> some other technical differences as well, so I'm sure it's not that simple.
> I did confirm from someone else that the Vanagon ECU's are all the same from
> I think 83 on, so you could replace the ECU in your 91 Vanagon with one from
> an 86 Vanagon. They're all the same part#, but with different revisions (the
> letter at the end) I guess VW just made a "better" version every year. If
> anyone else has info on this please share. I'm really curious.
>
>
> >From: "Tom Miller" <tmiller@vcmails.com>
> >Reply-To: "Tom Miller" <tmiller@vcmails.com>
> >To: "Mark Seifert" <theburnvictims@HOTMAIL.COM>
> >Subject: Re: Re: Actual Vanagon content!!
> >Date: Mon, 26 Apr 2004 13:14:53 -0400
> >
> >I forgot about the knock sensor ingnition on the Jetta. I guess if you
> >swap
> >the computer you might as well swap in the Jetta 1.8L engine as well!
> >TEM
> >----- Original Message -----
> >From: "Mark Seifert" <theburnvictims@HOTMAIL.COM>
> >To: <vanagon@GERRY.VANAGON.COM>
> >Sent: Sunday, April 25, 2004 11:42 PM
> >Subject: Re: Actual Vanagon content!!
> >
> >
> > > That's a good idea, because the junkyards have plenty of Jettas, and an
> >ECU
> > > goes for about 30 bucks. I've thought about this before, but I'm still
> >too
> > > skeptical to actually try it. It looks like the connector that plugs
> >into
> > > the ECU is the same, but some of the pins are different. That's why I
> >dont
> > > think it would work, because although SOME of the controls and sensors
> >are
> > > the same, they may not go through the same pins on the connector. And,
> >some
> > > of the sensors may have different resistances, which could send false
> > > signals, or some may not even be there at all. For example, I think the
> > > jetta has 2 coolant temp sensors. The Jetta ECU would look for that
> >second
> > > sensor, and not find it, and that would cause problems. That is
> >considering
> > > the engine would even start, which I doubt it would. If pin #7 is not a
> > > ground on the Jetta ECU, then there's your answer. I guess the only way
> >to
> > > know for sure is to try it. I'm too scared.
> > > -Mark
> > >
> > > >From: tmiller <tmiller@VCMAILS.COM>
> > > >Reply-To: tmiller <tmiller@VCMAILS.COM>
> > > >To: vanagon@GERRY.VANAGON.COM
> > > >Subject: Actual Vanagon content!!
> > > >Date: Sun, 25 Apr 2004 19:10:53 -0400
> > > >
> > > >Has anyone tried to use a Digifant ECU for the same year VW Golf or
> > > >Jetta? I was specifically curious about the use of an 89 1.8L Jetta
> >ECU
> > > >in an 89 Vanagon. The controls are similar, the sensors are similar,
> > > >has anyone tried this?
> > > >TEMiller
> > >
> > > _________________________________________________________________
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> >
>
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