Q: Just put new alternater on but battery not charging

asked by on

Every time I start my car the battery runes down
My car has an automatic transmission.

The alternator in your car charges your battery with the assistance from the voltage regulator which is something that regulates the amount of voltage being sent to the battery via the charging from the alternator. It’s function is to not over or under charge the battery, but to keep it at a specific and constant charge. When this is not working properly, this can cause the battery to be over or under charged often times resulting in the battery dying. I would recommend having a qualified mechanic, like one from YourMechanic, come to your home to diagnose your draining battery and help you repair it as necessary.

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. Just put new alternater on but battery not charging

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: The car cannot start, oil pan dented, lost oil pressure

Hello there, there are a few problems that could result in the loss of oil pressure and not being able to start. If the pan was hit in the right place it may have interfered with the oil pickup. The...

Q: Car won't start after installing new starter

Greetings. I would start first by double checking the starting system for faults.  A common issue owners of your particular vehicle may face is the ignition switch becoming faulty. The contacts inside the switch will wear overtime and lose the ability...

Q: No crank no start at witts end

This sounds like potentially a faulty starter solenoid. Try checking for power to the solenoid. The clicking sound is common sometimes when the battery is weak, but is also a common sign of a faulty starter solenoid. Have a qualified...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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.