Q: Potential electrical issue? Already replaced alternator and battery.

asked by on

One day, my radio cut out while driving, I had to manually assist in bringing my windows back up, the dash lights were dimming, and the gauges were rapidly going back and forth or completely dead (even though the car was moving). After shutting it off at home, it wouldn't start again. Mechanic replaced the battery for me and the car was running great for about 3 weeks. Then the same symptoms happened again. I took it back and they said the issue could've been missed the first time if the alternator was intermittently failing. So, they replaced the alternator. Again, the car was running great for another 3-4 weeks. I just experienced the same exact symptoms as described above. Is this something deeper than battery and alternator? Any experience or advice would be appreciated.

My car has 137000 miles.
My car has an automatic transmission.

Hi there. I understand how frustrating things like this can be. I don’t think you have any serious underlying electrical problems with the car. What I believe may be happening is simply a case of bad luck with aftermarket parts; this is not as uncommon as you would think.

You may have had any combination of bad battery and alternator. It is unfortunate, but these items will need to be retested and confirmed whether or not this is the case. If they do test ok, then we would be sure there is an underlying issue.

A quick visual of the battery terminals and alternator belt are easy ways to check the little things that get overlooked the most; a loose terminal or belt has a direct affect of the vehicle’s charging and electrical system.

YourMechanic has several available technicians that can assist you with an electrical problems inspection and provide an estimate and direction of repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Potential electrical issue? Already replaced alternator and 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: Power steering return hose leaks.

Check the clamps and make sure they are tight. If not, the line may have to be replaced. A Fluid leak like this can come from several different places. The hose can experience high pressure, especially where they meet with...

Q: What does the Low Fuel warning light mean?

The Low Fuel warning light is located on the instrument panel. When it illuminates, it means one of two things: 1. If the light illuminates and stays on, then your vehicle is running low on fuel. The light comes on...

Q: Jumper cables crossed.The car wouldn't start. Found it was a fuse that blew which we replaced. The car turned on but then we had t

If you are very lucky, you may just need a battery. When you cross the jumper cables, you can do a lot of damage in the blink of an eye. If it just trashes the alternator and the battery, you...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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...