Date:         Fri, 14 Jul 2006 08:56:44 -0700
Reply-To:     John Bange <jbange@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         John Bange <jbange@GMAIL.COM>
Subject:      Re: what is deal with "d" ecu
In-Reply-To:  <BAY111-F119264ABF6A62C93ECDD65A96F0@phx.gbl>
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> what is the deal with "D" type ecu and idle control unit?? does this
> really
> make a difference especially in an 87 van?
>
>
For the ECU, I believe the D revision has a few software tweaks, but nothing
that'd make it worth the expense of upgrading from an earlier model. Someone
with more detailed ECU knowledge than I should probably verify my
supposition...
For the Idle Controller, you DEFINITELY want the D revision. The first
version, revision B*, proved to have less than stellar longevity, and seems
to be the primary culprit in giving the Idle Controller its reputation for
failure. VDO redesigned it slightly for the D revision, replacing a few key
parts with heavier-duty versions.

* Revisions A and B were the first generation models for the European and
North American markets, respectively. C and D were the  second generation
Euro and NA units. Not sure why the Euro and NA Digifant T3's required
different Idle Controllers.

--
John Bange
'90 Vanagon - "Geldsauger"