Electrical issues, battery draining

2003 HONDA ACCORD
135,000 MILES • 2.4L • 6 CYL • 2WD • AUTOMATIC
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JASON PETTINATO
  • MEMBER
  • 3 POSTS
I bought the car listed above about 2 years ago, and it has had many electrical problems since. Headlights randomly dimming, internal lights sometimes not working, slow power windows, etc. Recently my car has been not turning when I turn the key in the ignition, with only a small click when I turn it initially. I measured the voltage of the battery and when it is off I measure about 11.8V, and when it occasionally turns on I get 14.2V. I'm thinking either a bad alternator or some form of electrical draining is going on, I would appreciate some help with this one. Thanks.
Dec 15, 2020 at 12:54 AM
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ASEMASTER6371
  • Experienced Mechanic
  • 52,796 POSTS
Good afternoon,

Your battery is no good. It needs to be 12.6 volts to be full charge.

https://www.2carpros.com/articles/how-to-charge-your-car-battery

https://www.2carpros.com/articles/car-battery-load-test

Then you need to recheck the charging system.

https://www.2carpros.com/articles/how-to-check-a-car-alternator

I attached a wiring diagram for you to view.

https://www.2carpros.com/articles/how-to-check-wiring

There are fuses to test and wiring to be checked for the system.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Roy
Dec 15, 2020 at 3:08 AM
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JASON PETTINATO
  • MEMBER
  • 3 POSTS
Thank you, I'll get that done. Darn Walmart batteries it's only 9 months old.
Dec 15, 2020 at 5:35 AM
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ASEMASTER6371
  • Experienced Mechanic
  • 52,796 POSTS
You are welcome.

Keep us updated.

Roy
Dec 17, 2020 at 8:41 AM
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