Not cranking over issues jump the battery?

Tiny
JAMESD79
  • MEMBER
  • 2012 JEEP PATRIOT
  • 100,000 MILES
Yesterday my grandmother told me that her car wouldn't start and I went to jump off the battery and the car would start when I jumped it off, but whenever I took off the cables for my truck it would shut off once and then whenever I had it running I took off the positive power from the battery and the car stalled what might be the issue.
Wednesday, November 13th, 2024 AT 6:40 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,520 POSTS
Please do not remove the positive cable from the battery while running, you can blow out computer modules. It sounds like the battery or alternator is bad. I would jump start the car again and then use a voltage meter at the battery to see if the alternator is charging. This guide can help, if the battery is charging that replace it with a new one and the problem should be fixed, here is a guide to help you:

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

Here is how to change the battery out. Check out the images (below). Please let us know what happens.

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Wednesday, November 13th, 2024 AT 8:56 AM

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