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    Altenator issues-gctid464755

    Fired up the AQ260A 5.7 everything was fine except the altenator was not charging,used a multimeter and no current was produced, Was ready to remove the altenator and have it tested then decided to hit the throttle RPMs went to 3000 and bingo started charging pulled back to ideal and was still charging, Shut the engine off thinking my problems were solved, re started the engine and the same thing happened no charge reved it up and started charging again, Any ideas ??

    Thanks Dan

    #2
    finalfling wrote:
    Fired up the AQ260A 5.7 everything was fine except the altenator was not charging,used a multimeter and no current was produced, Was ready to remove the altenator and have it tested then decided to hit the throttle RPMs went to 3000 and bingo started charging pulled back to ideal and was still charging, Shut the engine off thinking my problems were solved, re started the engine and the same thing happened no charge reved it up and started charging again, Any ideas ??

    Thanks Dan
    Do you have a 1 wire alternator, such as a Delco, if so they like to have the engine up to at least 1500 rpm to give it a kick start.
    Pat says: DO-IT-RIGHT THE FIRST TIME!

    Bayliner 3870 "ALASKA33)
    Twin 350 GM power
    Located in Seward, AK
    Retired marine surveyor

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      #3
      As above^. Normal for a 'self excited' one wire altenator.

      Chay

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        #4
        This is a Paris Rhone 50 amp three wire pos. neg. and another clip on wire.Have had this boat for 10 years never an issue before, Maybe a brush sticking, will get it checked thanks for the imput

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          #5
          finalfling wrote:
          This is a Paris Rhone 50 amp three wire pos. neg. and another clip on wire.Have had this boat for 10 years never an issue before, Maybe a brush sticking, will get it checked thanks for the imput
          It sounds like your 3-wire alternator has turned itself into a 1-wire alternator and needs the conditions described by 'boatworkfl' and 'cfoss' to work properly. (FWIW, the third wire doesn't have any real usefulness)

          Get it checked out or save yourself the cost and just go buy a new one. Or just keep using it.

          Fred

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            #6
            Thanks for the imput Fred, Had it checked out tec said it was a mess inside tons of corrosion,was amazed it worked at all, New one on the way $136.00 plus shipping.

            Thanks Dan

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