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Old 05-07-2009, 07:14 AM
zim@Eagle Mi.
 
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Alternator

I bought a new altinator that was advertised as 100 amp. is there a method to test this?? My voltmeter still shows 14v as I believe it should, When it in underload(bag compressor) it shows zero charge. how do I check the output?

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Old 05-07-2009, 07:40 AM
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You need a ampmeter to check what the compressor is drawing.
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Old 05-07-2009, 07:58 AM
zim@Eagle Mi.
 
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And assuming that is ok (it doesnt blow 20 smp fuses) how do I check the output of the alt.?
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Old 05-07-2009, 12:28 PM
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Hi,

The easiest way to check the output, is to just take your car to auto zone, checker, etc. & have them check it for free.
Rich
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Old 05-07-2009, 01:55 PM
zim@Eagle Mi.
 
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will do, Thanks
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Old 05-07-2009, 05:54 PM
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If you take the alternator off it can be load tested on an alternator machine. It will be difficult to sustain a 100 amp load using the electrical accessories in the car.
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Old 05-07-2009, 06:13 PM
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buy a carbon pile load meter from HF, should work ok... won't be a VAT-40 but it should be good enough to test what you want
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