Will not crank over?

Tiny
CHUCK.STER
  • MEMBER
  • 2012 FORD F-250
  • 6.7L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 280,000 MILES
The batteries are fully charged, try to start lights on dash flicker and go out totally and run start really clicks even with key out.
Tuesday, May 31st, 2022 AT 7:32 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,420 POSTS
Even though the battery charger may say the batteries are charged it sounds like the batteries are bad, but to be sure we can use a simple voltmeter to check the surface voltage which should be about 12.4 volts with the doors closed ignition switch off. Here is a guide to help you do the test:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

If the batteries test good let's clean the battery cables. here is a guide to help with that repair as well:

https://www.2carpros.com/articles/everything-goes-dead-when-engine-is-cranked

Please run down these guides and report back. Let us know what happens and please upload pictures or videos of the problem.

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Tuesday, May 31st, 2022 AT 12:03 PM

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