Skip the auto shop - Our mechanics make house calls

Q: Why won't my truck charge the battery?

asked by on

I have replaced the alternator, voltage regulator and battery and my truck still will not charge

My car has 10100 miles.
My car has an automatic transmission.

A: Hi there. Several situations could prevent ...

Hi there. Several situations could prevent adequate charging from an otherwise healthy electrical system. These include poor connections at the batter posts, power cables at the alternator, ineffective grounding between the battery, chassis, and engine (good connections and large enough cables to carry heavy current), or possibly a bad voltage regulator. A loose accessory belt will also prevent the alternator from properly charging. System voltage with the engine at a fast idle should be at least 13 volts.

I recommend having a certified mechanic, such as one from YourMechanic, come to your location to determine why the battery is not charging and suggest the necessary repairs to get your truck back in full working order.

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: Why is my battery constantly dying?

This may be related to the size of the battery simply not having the proper amount of cranking amps to turn your engine over when trying to start the vehicle. I would recommend starting with installing the correct size battery....

Q: Leaking air from part directly next to where the upper radiator hose connects to the fail safe and engine, wondering what part is?

I haven't seen one of those old Dodges in a long time. I wish I had a little better description of what you're asking about. I'm going to go out on a limb here and say that you are asking...

Q: Speedometer stuck at 120 mph and 4WD not functioning

Hey there. It may help to find the fuse for the instrument cluster, remove it for 10 minutes or so, then re-insert the fuse. Chevrolet appears to have had a "customer goodwill" repair available for this if your vehicle had...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.