samson_420

iTrader: (1)

I just noticed aabout a week ago that my running voltage is only at about 13.5-13.8 or so, which is kind of low.

From what I know this means my alternator is ready to croack. But, my 98 z28 only has 73k.

Is there any other cause for this?

Or should I just swap out the alternator?

9000th01ss

iTrader: (10)

Seems normal to me, both of my cars run in that range. My older stuff used to run at 14.7, but both of my LS1's run around 13.8

samson_420

iTrader: (1)

Really?

I thought it was supposed to be over 14.xx v


I may wrong, if so I don't have swap out the alternator.


Anyone else have a different running number?

stfuad

Around 14v is normal for most any car. If your really concerned you could overdrive the alternator.

samson_420

iTrader: (1)

What voltage is everyone else seeing on their f-body?

Formula413

iTrader: (1)

Depends on what accessories, if any, are running. Do you have a digital gauge or are you just going by the gauge on the dash?

9000th01ss

iTrader: (10)

I had everything running BTW, I was logging with HPTuners and it said 13.x volts. I got out my meter and put it on the battery, and then from the terminal by the relay box to ground and it read 13.8 at all locations.

samson_420

iTrader: (1)

I got 13.8v with my multimeter right at the battery with nothing in the car on except the day time running lights and the stereo barely on.

fauslpss

iTrader: (6)

Im seeing the same.

1994Z28Lt1

iTrader: (1)

this is absolutely normal, these alternators are regulated anywhere from 13.5-14.5 volts, but it also depends on the temp of the alternator

when the alternator is cold it will regulate at a higher voltage than when its hot

samson_420

iTrader: (1)

Good to know, so the alternator stays. - for now