Q: New alternator and battery. Volt gauge is reading less than 12 volts.

asked by on

I got a new alternator and battery but on the volt gauge its a little less than 12 volt while running

My car has 113000 miles.
My car has a manual transmission.

Hello there, a few common failures can prevent your 1984 Volkswagen Rabbit from charging even after the battery and alternator have been replaced. The most common would be the battery cable, a faulty voltage regulator, a bad alternator fuse, or a wiring harness fault. If you need to have the problem scoped out further, a certified technician, such as one from YourMechanic, will be able to diagnose the charging system to that this can be resolved accordingly.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. New alternator and battery. Volt gauge is reading less than 12 volts.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Charging system - 1990 Ford F-150

Hello. I would suggest checking the voltage regulator. This is a unit that monitors the charging system to maintain the proper voltage in the battery by regulating the rate at which the battery is charged. When this is not working...

Q: Why does my power steering warning light come on in my 2013 VW GLI

Hi there. Most of the time when this occurs it is due to a lack of voltage. It can be from a failing battery or alternator. Most of the time the issue is the battery. If the voltage is dropping...

Q: Engine, power steering, and brakes shut off

Given you had a "sudden" failure, you might check the crank position sensor first. This component instructs the ignition module when to fire the spark plugs. If the crank position sensor is OK, work your way up the electrical path....

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...