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2003 23V Electrical Issue

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    #1

    2003 23V Electrical Issue

    Hey guys, been a while since I've been here but recently started having a problem with my boat. To begin with, I replaced my alternator a couple months ago so I should probably get it tested first but my issue is as follows. With the key turned to the acc position or in the on position without the engine running, my stereo works. As soon as I start the engine, the stereo comes and for a split second a shuts off. It does this the entire time the engine is running, as does my perfect pass. So I'm thinking it could possibly be the voltage regulator but I know there's a few experts here so I thought I'd check in first. I know my batteries aren't getting a charge when it's running because it just about quit on me yesterday while loading up. All I could do was idle. I've also noticed my volt meter on the dash doesn't move any either.

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    #2
    Check your battery voltages with and without the engine running. 12v without 13.5v running. All ballpark figures but it should go up a volt or 2

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      #3
      Also why did you replace the alternator? If it wasn't charging and your battery went flat that might be knackered too.

      EDIT,

      just reread your post, measure the voltage at the alternator, you may have a blown fuse somewhere on the alternator circuit.

      you mention a voltage regulator, do you have one external to the alternator?

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      Last edited by ChrisSnow; 06-22-2015, 08:33 PM.

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        #4
        how fresh are the batteries? even with bad batteries they may have enough to run the starter but with the boat running (fuel pumps, sensors, ect) your running either direct off the alternator. Let us know what the status of the volts are on a meter.
        My life's journey is not ending up looking pretty, its sliding in broadside, used up, worn out, screaming "What a Ride"

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          #5
          fixing to get it on the charger and start checking voltage. I'm pretty sure the regulator is internal on the alternator. My previous alternator actually locked up lol, so yea it got the boot. It was the original from 2003.


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            #6
            Oh and my starter battery is brand new, a couple months old, and the other is one year old. I also noticed I've got the 60 Amp Buss Waterproof fuses so I reckon I should check those to make sure they're still good.


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