Alternator only charging @ 13.5 volts. Ideas?

[Supergumby5000 5,000+ posts]

Just thought i would look for some words of advice on this.

My alternator is charging (at idle) at 13.5 volts. This is AT the alternator, not the batteries.

Any pointers on things to check? If its the alternator itself, i'll probably just leave it as 1 volt isnt that big of a deal to me, but if it could be an easy fix, i might as well do it.

I'de swap in my stock alternator, but its across the state at the moment.

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[cj407]

could be the computer regulation.

 

[Supergumby5000 5,000+ posts]

could be the computer regulation.

I should be able to pull the harness plug out and re-read the voltage to test that, correct? Or will my vehicle not want to start if i do that due to sensors?

Guess i could go find out.... its raining at the moment though //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif