Question about Chevrolet Equinox
It sounds like your alternator is working fine.
When the voltage drops to 11.9, that is when you are running off battery power... it happens when you are idling, right? Your voltage regulators job is to switch the car over to battery when the alternator cannot make enough power to charge the battery and run accessories. This happens normally at idle, especially if you have allot of accessories (radio, lights, blower,etc.) running.
Keep driving to get more of a charge and it will come up a little more- 13.2 for a good battery at idle.
Relax! You fixed it!
FYI- if you do a great deal of very short hops during a normal day, or if you only drive very short distances, your alternator may not have enough time to fully charge your battery. If you can work in one or two longer trips during the week - 10 or 15 miles on a freeway or open highway would be ideal - it will help keep your battery at peak charge.
Posted on Mar 25, 2011
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Posted on Jan 02, 2017
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