bad battery causing altternator failure?
67 camaro RS with original style 3 wire external regulator. new alternator.
first fired up the car it ran fine, voltage was 14+ , later after a few 10 minute runs, I noticed the alt. was very hot, and then only showed 12v on gauge, pulled batt + cable, car died. there was a 4 amp drain through alt to ground when wires were attached to alt. ( figured shorted diode) sent alt off to be repaired and put in a rebuilt unit. it worked fine for a little while, then did the same thing. so there is another problem...
I have checked EVERYTHING !! grounds are everywhere, reg is wired right, alt is wired right, no grounds present on any hot wires,
can a battery still start a car and be bad at the same time? like a shorted cell or something? the alt. got very hot like it was putting out crazy amps or something.
It was a new battery 2 years ago, but it never got used it just sat while I worked on the car..
I will get a ( hydrometer ? to check batter cells tomorrow, and still probably just try a new battery.
no wires got hot or anything, just the alternator..
anyone have a similar problem?