| [ Total Views: 564 | Total Replies: 4 | Thread Id: 48973 ] |
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 Wag67
Wolfsburg Wizard
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| posted on February 15th, 2006 at 05:47 PM |
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Alternator light staying on
i have a problem with my Baja. i have just put in a new dash and after playing around with wires and new guages the alternator light is staying on and
after a couple of hours driving the battery is dead. checking the voltage i am getting 12.5 volts at one of the alternator terminals red thick wire
but at the other terminal which is a green wire it gets maybe 1 volt. is this right or is my alternator stuffed or is there another dodgy wire. when i
test the battery it is also reading 12.5ish volts If there is any auto elects or just someone that knows wiring i would love to know your opinion is
there any other tests i can do to test the alternator
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Old Dubber
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| posted on February 15th, 2006 at 06:02 PM |
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checking the voltage i am getting 12.5 volts at one of the alternator terminals red thick wire
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Is this with the engine stopped?
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the other terminal which is a green wire it gets maybe 1 volt.
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Is this with the ignition on?
Does the light come on when you first turn ignition on?
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Wag67
Wolfsburg Wizard
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| posted on February 15th, 2006 at 06:23 PM |
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checking the voltage i am getting 12.5 volts at one of the alternator terminals red thick wire
Is this with the engine stopped?
Yes when the engine is off but ignition on i get 12.4v
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the other terminal which is a green wire it gets maybe 1 volt.
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Is this with the ignition on? yes when ignition is on but engine off i get 1.5v
when engine is running i get same volts but if i turn lights on it drops .2v
Does the light come on when you first turn ignition on? yes light comes on
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bond
Veteran Volks Folk
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| posted on February 15th, 2006 at 10:30 PM |
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check all your fuses are good aswell.....
had a similar problem last week - fkd around alot untill realised it was a stuffed fuse - i lost like my fuel guage and indicators aswell as the
alternator light staying on if this helps
goodluck
nick
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Purple Martin
A.k.a.: Martin
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| posted on February 16th, 2006 at 01:19 PM |
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The alternator big red wire should read 12-ish with the engine switched off (12.5 is OK) and it should read between 13.5 - 14 when the engine is
running. Your alternator is therefore not charging! Replace the bushes and/or regulator. There are no fuses between the alternator and battery so
it's not that.
1959 red & white Beetle
1975 Kombi camper
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