[V8] charging problem/ alternator

[Ed Kellock]

My alt went out last fall.  Didn't have time to play and replaced it.  Could just be voltage regulator though.  Others posted btdt success replacing it only.  

I think temp/gas gauge outage is not related; it is probably a instrument cluster issue.  On the road trip that immediately followed alt replacement, my temp/gas gauges went out a couple times. 

Those 3 lights lit on the dash have signalled dead alt on two of my Audis.

Turns out my alt was bad so volt reg pursuit would have been wasted time for me.

Ed

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From: "Steve Kramer" <skramer at mac.com>
Date: 2004/03/31 Wed PM 12:55:38 MST
To: <v8 at audifans.com>
Subject: [V8] charging problem/ alternator

Guys,  I'm having an intermittent problem with the voltage coming off of
channel 11 in the diagnostic.  here's the story

- 1990 Audi v8 157k original alternator
-  replaced battery in January with a Sears International Battery ( had
great success with this battery over Audi's battery)
-  just added a subwoofer
- checked battery connections yesterday - vent was not hooked up

a couple weeks ago, I noticed that the cat , battery and brake light were
dimly lit.  There is no squealing noise on the belt, however, the engine is
making more noise than before.

As a non techie  - my thinking is basically when you turn on the car - these
lights turn on until your car turns over - then they go out.   In this
situation I believe the alternator is not giving enought voltage Revving the
engine cause these dim lights to go out - as if the alternator is reving up
and providing the proper voltage.

Sometimes , the car starts up normally and these lights are out .  Head
voltage is 13.8  .  When the lights are dim - the voltage is 11.8

Another possibility is that  when this happens is with my temp / gas guage
goes dead.   .


Any thoughts


Steve Kramer
1990 V8 q


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