Oldsmobile Aurora alternator malfunction with new battery and charging system warning on Oldsmobile Aurora

Some Oldsmobile Aurora owners report experiencing alternator malfunctions even after installing a new battery and receiving a charging system warning. These issues may manifest as power loss and an inability to move the vehicle, often indicated by the battery light remaining on despite attempts to charge or jump the car. Owners emphasize the importance of accurate diagnosis, which may involve inspecting the alternator voltage regulator diode and the wiring connector. Additionally, some report that a malfunctioning thermistor, which can read excessive temperatures or be improperly installed, may contribute to charging system failures. Furthermore, even with a new battery, a bad cell can damage the alternator quickly, highlighting the need to ensure the battery's health. Lastly, proper installation of the battery, including securing tight terminals, is crucial to prevent loose connections that could affect the charging system.