|
Confused
You guys are way ahead of me on the electronic theory. First, I know to discharge the "surface charge" on the battery before testing with my simple multimeter. My readings were done that way. Second, it appears that the charging voltage drops after driving the car for a while. That sounds like what it should do after the battery recovers from the initial startup load drain. Yesterdays charge rates were done after driving the car in 90 deg. heat for an hour or more. This a.m. it was 70 deg. That makes the comment about OAT perhaps relevant to my situation.
It sounds like the alternator is behaving normally except for the dash light "glow". One of the posts suggested the glow was normal for the older 911's. Mine is an '89 so I don't know if that applies.
Perhaps the only clear answer lies in having a specialized shop test it for me. If the faint glow, barely visible in daylight, is normal, then I'm waisting everybody's time. If not, I do have a bad diode it seems. In either case, I'm learning a lot here. Thanks.
|