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-   -   Alternator troubleshooting... (http://forums.pelicanparts.com/porsche-911-technical-forum/151403-alternator-troubleshooting.html)

Rick Lee 03-02-2004 07:10 AM
Alternator troubleshooting...
 
Car is a 1967 911E with an S engine and the alt. light keeps going on and battery won't hold a charge. Is this automatically a bad alt. or volt. regulator? Or how I can make sure it isn't a bad battery cell? Thanks.

304065 03-02-2004 07:34 AM
Put your voltmeter on the battery terminals with the engine running. If it's less than about 13.5 volts, you have a bad charging circuit, either VR or alt.

A bad battery cell will show up as a really low voltage with the engine off. Suppose you have six cells, 2V each. One bad =10V, right?


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