[V8] PRND321 Display problem - update

[Ingo Rautenberg]

OK, I think I've narrowed it down to a grounding problem in the shift
display.  As the display would give erroneous / blank readings this morning,
I switched on the manual drive mode switch, and while it flickered somewhat,
the shift display would read normally.  My guess is that the flickering in
the "M" now was a reverse-grounding of sorts.  Will tackle that job tonight.
BTW, this was the first unmolested instrument cluster I've encountered on a
V8.  It still had the white opaque tie wraps to hold the wiring for the
connectors on.  So it appears the relatively low mileage is correct.

Spent a good deal of Xmas Day and yesterday removing the old painted-on
double pinstriping :-(
Lots of work, but the result was certainly worth the effort.  God I hate
@#$%! painted-on pinstripes...

There, I feel better now :-)

Ingo

----- Original Message ----- 
From: "Ingo Rautenberg" <irautenberg at comcast.net>
To: <v8 at audifans.com>; <dsaad at icehouse.net>
Sent: Monday, December 26, 2005 12:52 PM
Subject: Re: [V8] PRND321 Display problem


> I dunno.  Sounds like a contact problem to me as the circuits (which
ones?)
> get warm/hot, the display goes haywire.  Eventually nothing is displayed
> :-( ...  Looks like I'll be doing some soldering of the IC at the very
least
> and report back...
>
> Ingo
> ----- Original Message ----- 
> From: <dsaad at icehouse.net>
> To: <v8 at audifans.com>
> Sent: Monday, December 26, 2005 9:58 AM
> Subject: Re: [V8] PRND321 Display problem
>
>
> > Sounds like a classic switch adjustment problem to me.
> >
> > Dave
> >
> > Quoting Ingo Rautenberg <irautenberg at comcast.net>:
> >
> >> I wish everyone a Merry Christmas and Happy Hannukah!
> >>
> >>
> >> Now to my patient, 1990 V8 Automatic:  As the car runs over an extended
> >> period (over 10 minutes), the Shift display flickers and drops down a
> >> gear --
> >> the actual tranny does not downshift to that gear, thank goodness.
Only
> >> thing I have noticed is that when this happens and it alternates
between
> >> Drive and 3, when in Drive and I floor the accelerator, she'll
> >> downshift --
> >> not so in 3.  Have not pulled any codes yet.  Also, when the indicator
> >> drops
> >> down a gear and I move the trans selector to neutral, Drive is
indicated,
> >> and
> >> when I drop down to 3, 2nd is indicated.  Sometimes the display often
> >> flickers more and may drop down to 2nd, 1st, whole display off/on, with
> >> no
> >> actual gear change taking place.
> >>
> >> Any BTDT?
> >>
> >> TIA
> >>
> >> Ingo with Christmas plate full of things to do :-)
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> >>
> >
> >
> >
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