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.

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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Why won't my truck charge the 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: Front brake gets locked up - 1983 Jeep CJ7

Have the residual pressure valve for the locking brake checked for problems. Residual pressure valves maintain a very slight hydraulic pressure for each brake in order to make the brakes more responsive when you press the brake pedal. If it...

Q: engine wont start, and when it tries it is sluggish

Claimed by Jeff Engstrom

Q: My 2013 jeep wrangler is having a hard time starting every day. Most days will not start. Battery and alternator tested fine.

If your battery is dead overnight then you may have a short in one of the systems or an interior light is on inside the vehicle. You should have the charging system checked on the vehicle to make sure it...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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.