Not cranking over issues jump the battery?

2012 JEEP PATRIOT

100,000 MILES

JAMESD79

MEMBER
1 POST
FOLLOW

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.

Nov 13, 2024 at 6:40 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.

STRAILER

AUTOMOTIVE REPAIR CONTRIBUTOR
54,178 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.

Images (Click to enlarge)

Nov 13, 2024 at 8:56 AM