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Battery malfunction after connecting it backwards?

Tiny
HOPKINSRAY
  • MEMBER
  • 2005 KIA SORENTO
  • V6
  • AUTOMATIC
  • 220,000 MILES
My battery was hooked up backwards just long enough to get a jolt of sparks. And it started right up but since then something is draining the battery, and it won't stay running for long. I took off cables while running to check the alternator and it still ran. So, I don't think it's the alternator. What do I check next?
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Tuesday, October 29th, 2024 AT 6:00 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It sounds like the battery is bad, I would remove it and take it to the auto parts store where they will test it for free. Also, this guide may help you:

https://www.2carpros.com/articles/resolving-reverse-battery-connection-in-cars-a-step-by-step-repair-guide

When the engine is running is the battery warning light on?
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Tuesday, October 29th, 2024 AT 11:48 AM

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