chucksc400

OK guys so last night night i was at my friends house hooking up and sub with wires that i have already had ran and have used on a sub last season.... i left the car running so my battery wouldn't died when we were working....i turn the car off to connect everything and when i went to start it the battery was dead... so this morning at work i installed a rebuilt alternator from advance auto 160 bucks and changed my battery witch is an interstate 600 cca.. when i tested the alternator with the hand held battery tested it still failed the test. its still not giving any voltage to the battery.... i tested what the alternator is putting out and its only putting out 12 volts when it should be somewhere around 14 correct? do u guys think something went in my ecu they not regulating the voltage right or is there bad ground that usually goes bad....


please any help would be great
thanks guys

Zfrog

I dont think the ecu controls the altrenator out voltage.

Did you test your previous alternator before changing it?

chucksc400

no i did not unfortunately.... i was also thinking it could be the rebuilt one i put in there...

chucksc400

does anyone no of the ground diagram that i can look at?