Audi charging problem

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1 total messages Started by root Thu, 07 Nov 1985 21:30

#447

Author: root
Date: Thu, 07 Nov 1985 21:30

31 lines
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>I have an 1983 Audi 4000 that does not charge the battery properly
>when first started.  However, once I rev the engine sufficiently, 
>the charging jumps up to 14 volts (as shown on my voltmeter) and 
>everything is fine until the next time I start the car.  

I once encountered an alternator with a broken wire in the rotor.
The broken wire passed through the steel rotor segment on the way to
the slip rings. It failed just inside a crimp/solder joint due to
metal fatigue, and would charge ONLY at >75 MPH; when centrifugal (sp?)
force + expansion due to temperature made a connection.

The symptoms sound somewhat alike. Try changing your alternator rotor
or removing it while hot and monitoring field resistance. Maybe you
should put it in a freezer. Any significant increase in resistance 
while cooling is grounds (open???) for rejection.


Lots of luck.


>From the artificial intelligence of hpscda!garyg
Gary Gitzen
Hewlett-Packard
5301 Stevens Creek Blvd.
Santa Clara, CA 95051
408-246-4300 ext 2507
/ ******* /
ihuxo!drk 
/ ******* /

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