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Old 09-11-2010, 04:56 PM
j cAT j cAT is offline
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Re: Is my alternator done for?

Quote:
Originally Posted by bhw33191 View Post
Its a new 95A alternator, installed 3 months ago. So i'm making a 6 hour trip from Maine to MA and all of a sudden my subs start cutting out, i look at the volts and they were spiking up to 16 or 17 volts!!! "I unplugged my subs just to be safe." If i kept the RPMs below around 1900, the volts wouldn't spike, i drove the car like this all the way and luckily she made it. But when the volts arent going crazy, its still overcharging at idle around 14.5 volts. I just don't understand this, they reallly mustn't build em like they use to because i put a lot of stress on my stock 78A alt with my stereo system and never had a problem.
I think I mentioned this to you before. these low amp alternators will not last with high powered noise makers. the current surges will destory the rectifiers. try to locate a larger alternator with an external rectifier mount on the alternator. this will last longer. you do have the large capacitor at the amp input I believe .
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