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Alternator Question Troubleshooting...


CptCorN

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Hello evereybody. Great forum here.

 

I'm a new Z owner since last fall and just before I put it away a wirenut the previous owner had installed on a line going into the alt (white/red) corroded and grounded out to a nut/bolt on the housing of the alt. The car died, I bought a battery before I found that problem. I just want to confirm that the alt would be shot... I took readings from the neg battery terminal to all 8 points on the 2 fusible link groups and got 11.9v on each of them.

 

I have not tried starting the car and removing the battery, or taking any other readings while the car is running... I just wanted some of your thoughts. I've been pulling lots of info from this site in the past 6 months... Thanks Again

 

Here is a photo of my Z (since this is my first post, lol)

20050919-018.jpg

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alternators generally pull about 13 volts. 12.5 or so volts generally gets to your fusebox. it seems a bit low.

and nice Z what kind of rims are those?

 

These readings were with the engine off and ignition on. I'm just wondering that since I was getting a reading at each of the 8 spots, that should all be good, and I should concentrate on the altenator.

 

They are 15" Rikens

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11.9 is an ok voltage for the car not running. There are four wires needed to make an alternator work. A ground, a battery wire, and two wires to tell the alternator to turn on and what voltage to control. Another think you can do is most auto parts stores can test alternators out of a car. That way you can know for a fact if its the wiring or the alternator itself. Good luck

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