Skip the auto shop - Our mechanics make house calls

Q: Alternator went out; battery won't stay charged

asked by on

My alternator went out, and my battery won't stay charged.

A: I would first start with having your batter...

I would first start with having your battery/starting system checked by a certified technician. If the alternator turns out to be faulty, replacement will be required in order to get your vehicle in reliable running condition again. The technician that inspects your vehicle will be able to replace the alternator as well. It is also a good idea to ensure that the technician checks the battery and alternator for poor grounds, bad/loose connections, and corrosion. If any of these are found in the system, they can prevent the battery from charging up. The starting system test will have false results if any of these are found as well. Ensure the technician checks for those first.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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!

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 won't move

Besides the MAP sensor code, you may have a transmission major failure or a problem with the shift cable. The shift cable bushings wear out and these vehicles sometimes the cable will pop off of the shift linkage of the...

Q: Battery light and power steering

The power steering pump and the alternator which charges the battery are driven off of the same serpentine belt. Therefore, the first thing to check is the condition of that belt and whether belt tension is adequate. If there is...

Q: Belt shredded after repair

The pulleys and a/c would have to be checked for one or more being seized up causing the belt to shred. I have seen the a/c pulley bearing seize and tears up the compressor. I have also seen the tensioner...

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...