So I've got an 84 Subaru Wagon, and it's been running smoothly for about a month now, drives basically perfectly. The other day, I parked it on the side of the street, and then when I tried to restart it I suddenly couldn't. I was getting battery power, it seemed, as I could hear the radio, use the lights, etc, but the engine wouldn't turn over. As a result, I suspected it was something wrong with the starter motor, and I went ahead and checked all the connections from the battery to the solenoid, and there was a wire that wasn't completely slotting in properly, I managed to bend the wire back properly and get it to fit snugly. This seemed to work, as I was able to get the car running again. I came back the next day to the same spot and turned it on again, just to make sure it was working, and it turned over just fine.
Great! Problem solved.
Or maybe not. This morning I went out to the car to turn it on (in the same spot - I didn't actually drive it either of the past two days that I got it running again) and it was completely dead - the battery seemed completely dead, I was getting no lights, no radio, nothing. Now, nothing had been left on, the lights were all off, and there shouldn't have been any reason for the battery losing its charge, but somehow it had. AAA came and jumped it (they also tested the battery and said it should be running fine, they also checked the electrical system/alternator and seemed to think everything was okay). The jump worked and the car started up, so I drove it around for about an hour to charge the battery, parked it, and then shut it off with a bit of trepidation.
I was right to be wary. It wouldn't turn on again. I was back to getting some battery power, the lights and radio, etc, but once again the engine wouldn't turn over.
I'm a bit at wits end right now with regards to the issue, I can't tell if the battery is giving me SOME power, just not enough, or if there's an actual alternator issue, or if the starter motor is the problem. Any help would be incredibly appreciated.