Question about Chevrolet Equinox

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I had my alternator checked out by 2 different shops and was told I needed new bearings. I had an alternator shop replace the bearings and he said brushes and all looked good. Took car home and went back out...voltage went from 14.3 to 9 and engine died as pulling into alternator shop 4 min away. Said may have to put a new alternator due to voltage regulator not sold as a part from GM for 07 Equinox. He did tell me that he cleaned a few things and all ok. Now my voltage is going from 14.3 to 11.9. Could this just be a fuse rather than replacing the alternator that I just paid to have bearings changed out in? Something is draining my battery and I don't think my alternator is working???

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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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Sounds like a bad alternator. A fuse is either good, or bad, not works, then don't.

Posted on Mar 25, 2011

  • bkejle03 Mar 25, 2011

    Thank you so much for a quick reply. I take it today to have it worked on again and will update!

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