possessed 4kq SOLVED and more!

[Greg Galinsky]

I have noticed in the some other cars; namely Volvos; that the idiot lights
all light up like a Christmas tree or flicker randomly if the diodes in the
alt go bad.  They use a very similar Bosch setup.  The voltage feeds
backwards and lights up the dash lights.  In the Volvos have not noticed the
warning lights to all light up if the the brushes are short; causing
intermittant charging.  Sometimes when the regulator portion goes I've seen
all the idiot light go on.

Might be a Bosch specific problem

Greg
90 90Q
90 80Q
90 80
88 90Q
88 80Q
Miata
----- Original Message -----
From: "Eyvind Spangen" <eyvind.spangen at c2i.net>
To: <one at humanspeakers.com>
Cc: "Brady Moffatt" <bradym at sympatico.ca>; "quattro" <quattro at audifans.com>
Sent: Monday, February 25, 2002 4:34 PM
Subject: Re: possessed 4kq SOLVED and more!


> On Mon, 25 Feb 2002 17:29:43 -0500, you wrote:
>
> >One of the most difficult to understand parts of the type 85 (and type
> >89, others...?) cars is the strange nexus of functions including the oil
> >pressure warning relay and the alternator light and voltage regulator.
> >
> >It's rather strange that the "bad alt." warning is to light up *all* the
> >warning lights.  sometimes.  It's as if the instrument cluster depends
> >in large part on a ground through the alt brushes, mediated in part by
> >the oil pressure warning control unit.
>
> I experienced the same on my '87 100 Diesel (euro model) without
> auto-check or any of that stuff when the alternator brushes went bad.
> Oil buzzer on, alternator warning light, everything acted up until I
> replaced the brushes, then everything fine again..
>
> --
> Regards,
> ES
>
>