I just had to replace my battery in my 84 scirocco hoping it was just the battery. I checked the old battery with a votmeter and it read
12.55v with the car off. As I tried to start the engine the voltage dropped to about 4.5v and the engine wouldn't turn over. After replacing the battery I got a somewhat higher reading before starting, it dropped to about 10.55v while starting. I am blabering on about nothing. I guess the important part is that with both bateries new and old the alternator only uped the voltage to 13.23v with no electronics on and 12.86v with al the electronics on. I wonder was it really the battery? Or time for a new alternator? Peter- posted
20 years ago