Thread: Grand Prix alternator over charging

My alternator started putting out 15.7 volts today then 14.7 at night. Never had one over charge on me thanks for any help.

15.7 is a little high, but probably not going to damage anything.

Failed internal regulator is pretty rare but not unheard of. Check the plug in harness on the back of it and see if its not quite plugged in, or full of corrosive cheese.

Thanks buddy will check it out

Ended up changing the alternator thanks for your input