CHARGING

V8 • 4WD • AUTOMATIC
Avatar
WJODONL
  • MEMBER
  • 1 POST
I HAVE NOTICED TODAY THAT MY BATTERY GAUGE IS SHOWING THAT MY BATTERY IS CHARGING ALL THE TIME
Dec 8, 2010 at 9:41 AM
Advertisement
Avatar
CARADIODOC
  • ✓Experienced Mechanic
  • 34,413 POSTS
Measure the battery voltage with the engine off and with it running.

Off should be near 12.6 volts fully charged. If you find closer to 12.0 volts, it's good but discharged. At 11 volts or less, suspect a shorted cell and the battery must be replaced.

At idle you must find between 13.75 and 14.75 volts. If it is higher than that, you'll need to measure the two voltages on the two small wires on the back of he alternator and we'll go from there.

caradiodoc
Dec 8, 2010 at 9:47 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle