Hi Gang,
have a 94 shadow, 3.0L with 220K that's has an intermittent problem. The alternator appears to quit charging. Upon starting the voltmeter will stay at battery voltage, and it throws a code 12. The first time this happened it only lasted a min or so, ie. after a few restarts it went back to normal. For grins I had the local autozone guy cycle the battery and test the charging system, all checked okay. Last night it did it again, this time appearing DOA. The alternator again passed a bench test at the local Autozone. Upon re-installing the alt, the problem went away. Probing at the battery, I found 12.8 volts static, and 14.5-14.8 when running. It had approx 2 volt drop when cranking. With all accessories on voltage never went below 13-13.5volts.
Any thoughts?
Many thanks Mike