Car

2006 CADILLAC STS
123,000 MILES
Avatar
MRBROOKS2129
  • MEMBER
  • 1 POST
Cadillac STS 2006, battery went dead bought a new one went dead two days later, was told if the car doesn't cut off while running its not alternator
Jul 16, 2012 at 5:58 PM
Advertisement
Avatar
ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
i dont know who told you that but i would not listen to that person anymore.

start with a battery test even if it is new. have an alternator output test perform as well as an ac ripple test. test the starter and all connections for voltage drops.

this is the correct way of checking a charging system

Roy
Jul 16, 2012 at 6:02 PM
Avatar
CADIEMAN
  • ✓Experienced Mechanic
  • 3,544 POSTS
something is staying on.remove the neg.cable at the battery.hook a meter to the neg.cable and the neg. post on the battery.using milli amp setting it cant be over 50ma or it will kill your battery.start by looking for something running with the key off.like the antenna,trunk pulldown motor,any lights.the glove box and trunk lights or the visor lights.start here.
Jul 16, 2012 at 9:09 PM
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.

Ask a new question

Frequently Asked Problems for This Vehicle