Sitting in the drive thru line at, I noticed that my battery and brake light would flicker, and rpms wound randomly drop. No big deal, I've seen this before, so it must be the alternator. Had it replaced. During this time, and with the car sitting, the battery dies. So, I have it charged, and I slapped it in. Good to go right? Not so much.
Driving down the road on the new alternator, the battery and brake light fickers again. I pull over, throw the hazards on, and notice that the rpms are dropping when the hazards flash, and the interior lights dim with them as well. I checked to make sure that the battery terminals are tight and the lead wire to the alternator is snug. All good there. Might I mention, the car never died, and doesn't have an issue starting.
I took a multimeter to the alternator, and it read between 13.8 to 14.5 at idle with no load. Something as simple as rolling up the windows or the fans coming on would make it drop below 13 to 12.7, and it's VERY noticeable with the rpms and dimming lights.
Took it to the battery, 12.2v when the car is off, and about 12.5 when the car is running.
Please help me.... I'm really about done with this car, as it's the most problematic vehicle I've ever owned. Which is a shame because I absolutely love this car...