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Bad Alternator Or Regulator?

amnash

By amnash,
in General Maintenance

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t_revz Grand Master

t_revz

Posted
Posted

What's your source for the voltage spec? Mine is the 32 GTR service manual. Is it different for other models?

Manuals from when I studied to be an auto sparky,

a little either way depends on personal preference but 14.9 is quite high. I would be concerned if mine was that high. It would be causing the battery to breathe more and dry up quicker and prob reduce battery life.

I've seen 24v systems overcharging at 29-30 and the batteries were so hot they can't be touched and gas pouring out of them and outer casings warped out of shape

t_revz Grand Master

t_revz

Posted
Posted

If the voltage at alt and battery is high then almost definitely the alternator.

If the alt and battery arent joined well and there is volt drop then alternator voltage will increase and battery will decrease. By disconnecting battery of a running car generally sends them to max output. 20+ volts if speed is fast enough

AngryRB Grand Master

AngryRB

Posted
Posted (edited)

the voltage im seeing is on the power fc, so it must be the alternator then? i remember when i was doing the poncams, i damaged the outside of the alternator trying to leverage it so maybe thats done something to it, i thought there would be a regulator that would control the voltage so it wouldnt go higher than the correct voltage..

Edited by SliverS2

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