Q: Alternator draining battery

asked by on

The alternator is draining my battery.

Hi there. If the alternator is not properly charging then the battery will die over time. The alternator needs to be load tested to see if it is going bad. Bad connections at the alternator and at the battery can act like a bad alternator so all of the connections should be checked first. If the connections are fine, it is still not charging then the alternator will more than likely need to be replaced. If you are going to have this done, consider using YourMechanic, as a certified mechanic can come to your home or office to diagnose your vehicle and replace your alternator if needed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Alternator draining battery

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: Car sputters when i accelerate

This problem may be from a throttle position sensor's erratic computer input. This can cause hesitation on acceleration or a light tip in lag. Buick has issued a technical bulletin: 05-06-04-058 which calls for the replacement of the throttle position...

Q: My horn started going off for no reason then when I was driving yesterday my car stop going and I had to pull over.

When a horn goes off like this, it is usually because something in the steering column has come loose making an electrical connection for the horn. This will require the disassembly of the horn pad to investigate. Often this will...

Q: Q: Car won't turn over.

If you are getting power to the starter during key on engine cranking key position, the problem could be the starter. Since you replaced the starter, I would make sure your ground from the engine to the battery was secure....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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 Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.