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Old Jan 9, 2005 | 12:29 PM
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16 volts alternator question

when i give my 428 some gas the volt meter pegs to 16 until you let off then it drops to 14 is this normal the alternator is brand new
 
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Old Jan 9, 2005 | 12:32 PM
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If the battery is in good shape, then no it's not normal. Do you have a battery you can swap in temporarily? If that doesn't fix it, I would make sure the regulator is grounded properly to the body, and the body is grounded to the engine block.

If this is a project that you have been working on for awhile, and the battery sits around and is a little low on charge, then that could cause it.
 
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Old Jan 9, 2005 | 01:00 PM
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i noticed when i turned on the head lights the volt meter gauge flickers back and fourth between 14 and 15.4 volts pretty fast do i need a new regulator it is about the only thing i have not fixed and the battery is almost new a made sure to charge it yesterday
 
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Old Jan 11, 2005 | 11:25 PM
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Originally Posted by Franklin2
I would make sure the regulator is grounded properly to the body, and the body is grounded to the engine block.
yes...this is the problem..the reg has to be grounded or it doesnt know the voltage of the battery...if it has a weak ground then it thinks or reads the battery to have a low voltage and it lets the altanator go wide open..iif it has a good ground then it can read the volts of the batt and regulate it properly..if you are sure of the ground and you still have the problem then it is new reg time
 
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