19gsx91
10+ Year Contributor
- 1,199
- 294
- Apr 20, 2011
-
Walworth,
New_York
Hey guys, I'm posting this at work so I'll attach a log when I get home..
Basically what's going on is my battery output while off is the usual 12.4-12.5 volts.. but while running it only goes up to 12.9-13volts.. constant. WOT is normal, it will drop down a little bit throughout the pull but what could be causing the voltage to be constantly low like that? Battery is good, alternator was changed a few months ago with a 90amp galant alternator. If I add a load such as fans, or lights it will dip down but then go back to 12.9-13.0v
I'm suspicious of the alternator but this will be the 2nd or 3rd time I've installed one in the last year or two and I want to make certain that it is the issue and there isn't some fusible link somewhere that has just deteriorated over time.
My next step is to check voltage at the alternator while running, is there anything else I should be looking for?
Thanks,
Joe
Basically what's going on is my battery output while off is the usual 12.4-12.5 volts.. but while running it only goes up to 12.9-13volts.. constant. WOT is normal, it will drop down a little bit throughout the pull but what could be causing the voltage to be constantly low like that? Battery is good, alternator was changed a few months ago with a 90amp galant alternator. If I add a load such as fans, or lights it will dip down but then go back to 12.9-13.0v
I'm suspicious of the alternator but this will be the 2nd or 3rd time I've installed one in the last year or two and I want to make certain that it is the issue and there isn't some fusible link somewhere that has just deteriorated over time.
My next step is to check voltage at the alternator while running, is there anything else I should be looking for?
Thanks,
Joe