Jason Rodriguez

Asked by Aug 13, 2015 at 01:46 PM about the 2006 Nissan Altima 3.5 SL

Question type: General

need some help here.. Replaced the factory alternator in Feb and the shop put a rebuilt one in. within 1 month i had it replaced again this time with one from a parts store now that one has failed, shop is going to put a factory one back in.. What could be causing all of this to happen within the last 4-6 months..

3 Answers

Tom Demyan

rebuilt alternators aren't built to last, I always recommend a new one.


Never put a rebuilt one if you can avoid it, please click helpful if you found this information useful, thanks..


Well lets see, why did you replace the alternator in the first place was it a mechanical problem or an electrical one? Did you check to see what the output of the alternator was with a meter? What is it? It should be between 13 and 15 Volt. An easy check to see if it is the alternator or the battery is to start the car and turn on the lights and the AC and do the head lights dim or does the car kill you may need a new alternator. Remember the battery is used to only start the car and the alternator ensures that the battery is charged but the alternator runs the car electrical system. If you added a lot of additional after market electrical devices you may need a larger output alternator. New is always better than used but a rebuilt one should last longer than that!

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