[V8] charging problem/ alternator

[Steve Kramer]

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