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  • 1 Post By 34_40
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Thread: 10-SI alternator checks good but discharges when in car.
          
   
   

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  1. #1
    34_40's Avatar
    34_40 is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2007
    Location
    New Bedford
    Car Year, Make, Model: 34 Ford 3W Coupe Replica
    Posts
    14,754

    Run a separate ground wire right from the battery negative (assuming it's a neg. ground system) to the mount of the alternator. See if it helps.
    ted dehaan likes this.

  2. #2
    mr-natural is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2018
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    SCOTTSDALE
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    35

    34-40 prior to removing the alternator the second time I used my heavy duty jumper cables and did exactly that. Shorted the negative terminal to the housing of the alternator directly. No change.

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