Join Date: Mar 2002
Location: Austin, TX, USA
Re: Alternator issue
Easiest way to check an alternator is take it to your local auto parts store. They should have a test bench they can spin it up on and tell you what is wrong with it. But before you do, see what the voltage is between the negative battery post and alternator shell. Should be darn near 0 volts. If not, you've got a bad ground to the alternator case.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI