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Alternator issue?

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X_Factor
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Alternator issue?

Postby X_Factor » February 28th, 2018, 6:46 pm

Car is a nissan note, hr15, 140 amp alternator
having some fluctuation in charging voltage for probably the past month
normal driving the voltage meter shows dips as low as 11.8v, hardly ever see a voltage above 13.8ish

Bought a f.used alternator, same issue
changed the battery same issue
changed the voltage meter, same issue, used mine in several vehicles and i get steady 14.1-14.3

could it be another bad alternator?

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X_Factor
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Re: Alternator issue?

Postby X_Factor » February 28th, 2018, 7:14 pm

a pic of the shaft that goes in the regulator...should the top be that worn?
20180228_162359.jpg

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X_Factor
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Re: Alternator issue?

Postby X_Factor » February 28th, 2018, 8:07 pm

did some more tests just now, measured directly off the alternator and while in drive gear, output from alternator showed a 12v reading...crazy

causes?...
change the belt?

Musical Doc
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Re: Alternator issue?

Postby Musical Doc » August 9th, 2022, 8:35 am

Bumping an old thread. Do you guys know of anyone who services alternators? Getting a whining sound from mine so could be the bearing going bad

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