What causes unstable charging current?
2 Answers
The reasons for unstable charging current include the following: 1. The generator belt is too loose. Check if the tightness of the generator belt is appropriate, and replace or adjust it. Inspect the engine belt tensioner and replace it if necessary. 2. Poor connection between the generator and the battery. Check the wiring connections between the generator and the battery terminals. Use a test light to inspect the engine and ensure it runs stably. 3. Uneven wear of the carbon brushes or failure of the carbon brush springs. 4. Burned or contaminated contacts in the voltage regulator. 5. The regulator adjustment does not meet the requirements.
When the charging current is unstable, as a frequent driver, I feel confused. Common causes include issues with the alternator or voltage regulator. For example, if the regulator is faulty, it can cause current fluctuations, making the dashboard lights flicker. Loose or corroded battery terminals may also be the culprit, as poor wire connections can lead to intermittent current. I once experienced unstable idling when starting the vehicle, which turned out to be an internal short circuit in the alternator. Don’t overlook blown fuses either, as they can cause the entire charging system to work intermittently. Prolonged issues like this can drain the battery, shorten its lifespan, or even lead to a breakdown on the road. I recommend paying attention to dashboard changes before driving and seeking professional diagnosis at a repair shop as soon as any abnormalities are noticed—safety always comes first.
