Q: Charging issue, New alternator/battery

asked by on

Replaced the alternator in May on my Nissan Altima 3.5 V6 2008 because of battery and brake light turning on and off, car was working fine for a while then battery and brake light would intermittently turn on and off again. Got a yourmechanic to come diagnose and was told the battery needed replacement, got it replaced but after a week had the same issue come back. Got another diagnosis and was told alternator had a bad diode, got a replacement alternator from auto zone( remanufactured) but after 2 weeks car stalled and eventually died on me while driving, got another diagnosis and alternator not charging the battery after a few minutes, fuses were checked and was all good according to the mechanic. Now going to need to replace the alternator once again for the 3rd time in six months. What are the odds of getting two bad alternators in a row? Would like to know whether something else is causing the alternator to stop charging ? Any help or advice would be great. Thank you.

My car has 125000 miles.
My car has an automatic transmission.

Hi Christian. Thanks for contacting us tonight. An alternator is a mechanical system. Failure of an alternator is typically due to one of three sources. Either the internal components of the alternator fail (which is common sooner in refurbished alternators or aftermarket replacement components), the ground connection to the alternator is poor, the charging cables are damaged, frayed or poorly installed. In most cases, the alternator will fail when the efficient flow of electricity is compromised. Although it’s likely the most expensive option, the best way to resolve these issues is by replacing the alternator along with all charging cables that allow the system to work correctly.

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. Charging issue, New alternator/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: I had my timing belt and water pump replaced 45000 miles ago. Now I am told I need to replace water pump. Is this normal?

Hello there, 45,000 miles is a short lifespan for a water pump on your 2000 Honda Odyssey. There are a few reasons the water pump will need to be replaced, such as a pump bearing failure, water pump seal leak,...

Q: Jump started car now all warning lights are on is that normal?

Once the vehicle engine is running, there should not be any warning lights on. If there are, something is wrong. If the battery is faulty, be sure to have it replaced immediately. Jump starting a car these days is an...

Q: Car cranks but doesn't turn over; battery and starter replaced within last 1-2 months

Hi there. The best option to accurately diagnose why your Nissan is having difficulty starting is to have a professional mobile mechanic complete a car is hard to start inspection. This is what should have been completed prior to replacing...

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 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.
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.