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Thread: 10si alternator
          
   
   

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  1. 08-29-2020 07:51 PM #4
    36 sedan's Avatar
    36 sedan
    36 sedan is offline CHR Member
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    Car Year, Make, Model: 36 Ford Sedan, 23 T Bucket
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    Quote Originally Posted by 33plym View Post
    Does anybody know how to test an alternator ? With lights on at red light volts drop to about 10. As soon as i get rpm to 800 it charges 14 volts.
    This is often caused by resistance, either by a bad connection or undersized wiring. A bad internal diode can also be to blame.

    Quote Originally Posted by 33plym View Post
    2-5/8 alt pulley. Standard size crank pulley.
    Those are the standard sized pulleys for this alternator and should work fine.
    Last edited by 36 sedan; 08-29-2020 at 08:37 PM.
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