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Testing Aftermarket Alternators at Parts Store
#1820512
05/06/15 08:28 PM
05/06/15 08:28 PM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
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I took my Powermaster 75a (60a/99a) alternator into NAPA this afternoon to test it. Since that unit was not in their computer, we picked the highest rated unit that we found on the list (65a). The test was attempted three times and each time it told him to check the grounds. So I walked out with no answer.
Is there something the parts stores can do to test an aftermarket alternator if it is not listed on their computer?
Thanks
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: Testing Aftermarket Alternators at Parts Store
[Re: ademon]
#1820551
05/06/15 09:00 PM
05/06/15 09:00 PM
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Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
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OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
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For reference, we tried 74 challenger 360 for the below car.
EDIT: I looked up a 79 Dodge Magnum and it showed alternators for 100 or 120v. I will try that next.
Last edited by YO7_A66; 05/06/15 10:38 PM.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
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Re: Testing Aftermarket Alternators at Parts Store
[Re: max_maniac]
#1820761
05/07/15 12:55 AM
05/07/15 12:55 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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I just went through the same thing and they could not run a test on it. If they can't put in the parameters by knowing what car it came off of then the computer will not read it The older machines would read the output of any alternator but not the new ones - that's progress right? Actually, it is progress. Alternators have different parameters depending on how designed and built. Knowing what you are testing will tell you if it meets the parameters and not rely on some parts store droid guessing it's ok. If you want more than that going to the parts store is the wrong choice, take to an alternator rebuild shop.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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