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What Are the Effects of a Faulty Car Voltage Regulator?

1 Answers

DiIsabelle

07/29/25 4:30pm

Here are the effects of a faulty car voltage regulator: 1. Voltage will increase: Most voltage regulator failures are caused by the breakdown of internal field-effect transistors or Darlington transistors, leading to uncontrolled excitation current and an increase in the generator's output voltage, resulting in overcharging of the battery. 2. Unable to charge the battery: Generator damage will reduce the output voltage, making it unable to charge the battery. 3. Battery voltage drops: If the generator fails to produce electricity, the battery indicator light may turn on, or it may not light up, or the generated electricity may be too high, causing the battery voltage to drop. When the voltage drops below 10 volts, the engine may experience shaking, difficulty starting, or lack of power during acceleration, and may even stall.

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