quattro Digest, Vol 141, Issue 5

Sat Jul 11 17:10:53 PDT 2015

Hi, Radek.
Glad you solved your alt issue.
I'd appreciate the link to the alt connectors designation table.
Thanks,

Tihol

On Thu, Jul 9, 2015 at 12:00 PM, <quattro-request at audifans.com> wrote:

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>    1. Re: Alternator differences (radek at uniserve.com)
>
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 08 Jul 2015 14:12:44 -0700
> From: radek at uniserve.com
> To: quattro at audifans.com
> Subject: Re: Alternator differences
> Message-ID: <20150708141244.16601xtuo98z4h1o at webmail.uniserve.com>
> Content-Type: text/plain; charset=UTF-8; DelSp="Yes"; format="flowed"
>
> Thanks guys.  The original alternator on the van lasted 20 years, all
> I had to do was periodically install new brushes.  About three years
> ago I had to replace it because the rebuild shop wouldn't work on it -
> too rusted.  So, the replacement was still shiny when it failed.  I
> took it to the rebuild shop and swapped for a new one - all is good
> for know.  I wonder how long this one is going to last - the van is
> slowly losing its German origins and becoming Chinese!
>
> What was puzzling for me were the extra connectors on the newer
> alternators.  It turns out L goes to the indicator lamp, DFM goes to
> the ECU.  Since the van does not support a ECU connection, it can be
> left out.  So, to answer my original question, the newer Jetta
> alternator should fit the van.
> In the process of researching this, I came across a reference table
> entitled "Alternator Voltage Regulator Terminal Designations" which
> lists equivalents from different manufacturers.  For example, what
> Bosch and Valeo mark as DFM, is FR at Delco and Ford.  If anyone is
> interested, I can email you the table directly.
> Thanks.
>
> Radek.
> 88 90Q
> 91 V8Q 5-sp
> 93 EV
>
> > Message: 1
> > Date: Tue, 7 Jul 2015 22:47:22 +0000 (UTC)
> > From: Peter Orban <orbanp1 at yahoo.com>
> > To: "quattro at audifans.com" <quattro at audifans.com>
> > Subject: Re: Alternator differences
> > Message-ID:
> >       <1114988009.752578.1436309242386.JavaMail.yahoo at mail.yahoo.com>
> > Content-Type: text/plain; charset=UTF-8
> >
> > Hi Radek,
> > Do not overlook the fact that there could be enough corrosion
> > between the alternator metal components that would impede the flow
> > of electricity.
> > Every sub-component of he alternator on my son's car was fine,
> > except where the rectifier block was bolted to the alternator frame
> > there was enough corrosion for the alternator not to work
> > correctly.Similarly, on his starter the ground "did not get" from
> > the front of the starter where it is bolted to the bell housing to
> > the end plate of the starter where some of the brushes are grounded.
> > The ground current eventually went through the bearings (sintered
> > bushings) and the shaft of the starter, ultimately destroying the
> > bushes.
> > What I am saying is that take every bolted connection apart on the
> > alternator where electricity is supposed to flow, clean the mating
> > surfaces, apply some dielectric grease, and reassemble, assuming
> > that all the components are otherwise fine.
> > PS. We live in the rust belt.
> >
> > Good luck, Peter
> >     Message: 1
> > Date: Mon, 6 Jul 2015 22:47:16 -0700
> > From: Tihol Tiholov <t.tiholov at gmail.com>
> > To: "quattro at audifans.com" <quattro at audifans.com>
> > Subject: Re: Alternator differences (Radek)
> > Message-ID:
> >     <CAFgi7AZ=LgMUBRVGv1s2NWP2--m7mWpvthgtKChKX=K7AJzLhg at mail.gmail.com>
> > Content-Type: text/plain; charset=UTF-8
> >
> >>
> >> From: "Radek" <radek at uniserve.com>
> >> To: <quattro at audifans.com>
> >> Subject: Alternator differences
> >> Message-ID: <C97B0D45CF0F467DB299316122819C59 at Compaq>
> >> Content-Type: text/plain;      charset="iso-8859-1"
> >>
> >> Obligatory Audi content:  5-cyl in my Eurovan.
> >> The alternator in my 93 EV is not charging, even though brushes are
> ok.  I
> >> have a spare alternator for my daughter's 04 Jetta - it's physically
> >> identical and fits the EV; however, there is a slight difference in the
> >> electrical connections.  The main charging wire connector is the same -
> a
> >> post with 13mm nut on it.  The small connector, though, is different:  a
> >> single blue wire on the EV, two black wires on the Jetta.  When I look
> at
> >> the broken EV alternator, there is a double connector on it as well, but
> >> only one wire goes to it.  On the Jetta, two wires go to the connector.
> >> Can I swap the alternators?  BTW, the Jetta alternator has letters L DFM
> >> next to the small double wire connector.
> >> Thanks.
> >>
> >> Radek
> >> electrically challenged
> >>
> >
> > Before swapping alternators, you could check the diode couples in the '93
> > alt. I went to a shop and and had them changed - all's been well since.
> Huw
> > would probably give you all the details
> >
> > --
> > Tihol
> >
> >
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-- 
Tihol