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・Fair and transparent pricing

Get a quote

What others are asking

Q: Transmission not working.

You didn't say whether your truck is manual or automatic, but I'm going to assume it's a manual. Most likely, the problem is with the clutch or clutch hydraulics. A qualified technician, like one from YourMechanic, will be able to...

Q: Car only runs when it is jump-started - 1995 Cadillac Fleetwood

Hi! The first thing to check is that the battery cables are clean and tight and not corroded. They should be tight enough that you can not move those connections by hand. Check both at the battery and down where...

Q: Unlock and lock remote working then it stop working.

You may have a faulty key fob. Inside these key fobs are very small electrical contacts that are subjected to an enormous amount of activity (think about every time you lock and unlock your car). When these contacts begin to...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.