Q: Q: New battery is being drained

asked by on

I have a 2000 Oldsmobile Alero. We were having issues with our car and was told that the fuel pump, starter, alternator & battery all needed to be replaced. We bought everything brand new, except the alternator which we refurbished. Everything is hooked up correctly. And the car runs. It actually drives a little smoother than before. However our battery light came on which is odd since I had bought it 3 hour prior. I took the car to Autozone. However they could not test anything because the battery was at 16% and to low for their machines. Why is it that the battery is being drained? We can not figure out the issue.

My car has 182000 miles.

This may be a sign of a weak battery, a failing voltage regulator or failing alternator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns the alternator. The voltage regulator is a unit that regulates the charging of the battery by the alternator and maintaining a certain amperage while the engine runs. When the alternator is not working properly, this may result in the battery quickly losing charge and the car losing all power as you have described. I would recommend having an expert from YourMechanic come to your location to diagnose and repair your charging system.

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. Q: New battery is being drained

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 AM GETTING CHECK ENGINE LIGHT AND CODE P0420

Hi Cornelius. Thanks for contacting us today. The P-0420 typically has to do with the catalytic converter in your vehicle, but can be triggered by damaged by O2 sensors, exhaust manifold or exhaust pipe leaks, or wiring harnesses that relay...

Q: Alternator not grounding on 2000 BMW 323Ci

Hello. If this occurred right after the accident, then I would check the ground connections on the battery first. If they are fine, then the wire going from the battery to the alternator needs to have a voltage drop test...

Q: No issue prior. Left light on all night. Battery died so I jumped the car for 5 mins. Now I have to use digital cables to start engine every time.

Hello, thanks for writing in. When you ran the battery all the way down you may have damaged the battery internally causing it to not be able to hold or take a charge and voltage is below 9.6 volts under...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
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...