Is it normal for car volts to get to 11.8 while the car is sitting and running?
Normal Voltage Range
Typically, the voltage of a car's battery should be between 12.6 and 13.2 volts when the engine is running. A voltage of 11.8 volts while the car is sitting and running is generally lower than the normal range.
Possible Causes
Several factors can contribute to a low car voltage:
- Faulty alternator: The alternator is responsible for charging the battery while the engine is running. A defective alternator may not provide enough power to maintain the voltage.
- Battery problems: A weak or damaged battery may not be able to hold a charge, leading to a voltage drop.
- Electrical issues: Faulty wiring, fuses, or other electrical components can cause voltage problems.
Impact on Vehicle
Low car voltage can have several consequences:
- Difficulty starting the engine
- Dimming headlights and other electrical accessories
- Reduced fuel efficiency
- Battery damage
Troubleshooting
If you suspect a low car voltage, it's important to:
- Check the battery terminals for corrosion or loose connections.
- Test the battery using a voltmeter.
- Inspect the alternator belt for damage or tension.
- Consult with a qualified mechanic for further diagnosis and repair.
Related Questions and Answers
- What should I do if my car voltage is low? Test the battery and alternator, and consult with a mechanic if necessary.
- Can a low car voltage damage my battery? Yes, prolonged low voltage can shorten the battery's lifespan.
- Can I drive with a car voltage of 11.8 volts? It's not advisable to drive with a voltage that low, as it can strain the electrical system and battery.
- How often should I check my car voltage? Regularly check the voltage during routine maintenance and before long trips.
- What are the consequences of high car voltage? High voltage can damage electrical components, including the alternator, battery, and engine control module.
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