observed issue, when engine speed is about about 3k rpm or above my voltage gage will fluctuate rapidly between about 14.1 and 14.7 volts when I have a load on, ie lights, fan, ac or all of the above. when there is no load, nothing is on the voltage sits right at 14.7 volts as it should at any rpm. when there is no load the voltage is 14.7 at idle, but with a load or a heavy load the voltage will drop to 13 or less at idle. when the voltage is rapidly fluctuating I can see it is all of my lights, interior and exterior
I have read the post about the wiring fix and I am not sure that that applies here, when first starting the car the voltage goes right to 14.7 volts and does not fluctuate...
I feel there isn't a connection problem as with out a load the alternator is working correctly as noted by my volt gage and reading across the battery ...
battery is a brand new Optima redtop, new Autolite alternator and Nima's lightened and underdriven pulleys
so the low voltage at idle under load may be because of the pulleys as as soon as you rev the car up the voltage jumps to 14.7 and the lights get brighter ...
if I can do it the plan is to get home this afternoon and verify that the connections are good, and maybe switch back to the stock pulley for the alternator ...
any other thoughts?
could it really be the wiring?
this problem just started after the new alternator, previous alternator was not charging fully, in the morning it would put out 14.7 volts, but as the day went on it would drop off some, and from time to time it would drop to about 13.5 and stay there, but one brush was very worn and might have stopped making contact all of the time leaving just one brush working ...
I have read the post about the wiring fix and I am not sure that that applies here, when first starting the car the voltage goes right to 14.7 volts and does not fluctuate...
I feel there isn't a connection problem as with out a load the alternator is working correctly as noted by my volt gage and reading across the battery ...
battery is a brand new Optima redtop, new Autolite alternator and Nima's lightened and underdriven pulleys
so the low voltage at idle under load may be because of the pulleys as as soon as you rev the car up the voltage jumps to 14.7 and the lights get brighter ...
if I can do it the plan is to get home this afternoon and verify that the connections are good, and maybe switch back to the stock pulley for the alternator ...
any other thoughts?
could it really be the wiring?
this problem just started after the new alternator, previous alternator was not charging fully, in the morning it would put out 14.7 volts, but as the day went on it would drop off some, and from time to time it would drop to about 13.5 and stay there, but one brush was very worn and might have stopped making contact all of the time leaving just one brush working ...
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