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Jonny Quest 
Grand Poobah 
Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2859 |
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 Topic: Alternator OutputPosted: April-01-2015 at 11:29pm |
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I've got a 3 year old ARCO alternator (Model #60050) in my 1994 Ski Nautique with Pro Boss engine.
The voltmeter shows 14-15V when the engine is running. I thought that the gauge might be bad (20 years old), so I put in a new voltmeter. Same. 14-15V wen engine is running. Is that too much? JQ |
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: April-02-2015 at 12:19am |
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Rob,
The 15 is on the high end but 14 would be normal especially if the battery needs charging. What kind of battery do you have? Hopefully it's NOT a deep cycle!. I do suggest you go and purchase a $18.00 VOM BEFORE and test first before just replacing a gauge thinking it's bad. |
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2859 |
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Posted: April-02-2015 at 1:56am |
Battery = Optima (non deep cycle) VOM Test First = You are correct. I should have purchased a tester...but I spent $35 on a new voltmeter, betting that the 20 year old gauge is bad. |
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2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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MustangMadness
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Joined: April-15-2014 Location: Seacoast NH Status: Offline Points: 114 |
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Posted: April-02-2015 at 9:53am |
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14.5v is normal above idle, but I would recommend a load test on the battery especially if it is the original (1994).
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I like a 6' beam on a small lake... My Muscleboat
1975 Mustang 225 307RH |
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phatsat67
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Joined: March-13-2006 Location: Indiana Status: Offline Points: 6148 |
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Posted: April-02-2015 at 10:36am |
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The newer style Mando alternator usually outputs around 14.5 the older style Motorola always outputs around 13.5
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8122pbrainard wrote: