Skip the auto shop - Our mechanics make house calls

Q: Battery won't stay charged

asked by on

Have replaced battery, alternator and starter and it won't stay charged. Note... the radio and clock do not work.

A: This is a common problem when the voltage r...

This is a common problem when the voltage regulator is failing which is potentially due to a faulty ground or connection. I would start by checking the battery connections and cables to be sure they are not dirty or corroded. Also, check the ground cable (black going from battery to chassis of truck) to be sure it is properly connected. Lastly, I would recommend having the voltage regulator tested. This is a unit that regulates the charging activity from the alternator to the battery. When this is not working properly, this can cause the battery to over or under charge resulting in it dying. Since there are a few things to inspect, I would recommend having a certified professional from YourMechanic come to your home to inspect the battery along with the other components mentioned.

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・Save up to 30%

Get a quote

What others are asking

Q: Cannot turn off car alarm.

There are a lot of problems with Ford's anti-theft device in that year model. You should be able to reset the anti-theft alarm by locking and unlocking the passenger side door with the key. If that does not work I...

Q: Car hard to start

Hello, with these two symptoms together, it sounds like you could have an issue with the fuel pump. Generally when a fuel pump is having issues you may have to attempt to start the engine multiple times before it will...

Q: Jump starting

I would say it is perfectly safe to use another vehicle to jump start your own. When jump starting, always be sure to connect positive and then negative. Also, make sure that you have good connection to the terminals. Certain...

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...
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.