Is my charging system working right?

Discussion in 'Engine & Drivetrain' started by aces-n-eights, Aug 8, 2018.

  1. aces-n-eights

    aces-n-eights Member

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    2006 Tahoe, 200k miles.

    I'm a little over halfway thru a a long road trip - Alaska to Michigan, about 4500 miles. I look at the voltmeter and most of the time it's a needle width above the "14" - this is the normal reading. Several times a day i'll notice the meter is indicating about 2 needle widths below the "14", then after an hour or so it's back up to normal.

    No difference in electrical load that i can determine.

    Is this normal operation? Is my alternator trying to tell me something? Will it go another 2000 miles to my destination?
     
  2. HiHoeSilver

    HiHoeSilver Away! Supporting Member

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    Normal. The charging system is controlled by the computer based on a few different factors like battery condition, demand, etc.
     
  3. aces-n-eights

    aces-n-eights Member

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    Thanks HHS! I'm sure it's been that way forever and i just noticed it. Lots of time to think about stuff on a long road trip.
     
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  4. Tonyrodz

    Tonyrodz Full Access Member

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    Lucky devil. I love road trips.
     
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  5. aces-n-eights

    aces-n-eights Member

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    Yeah, we have done the Alaska Highway 8-9 times over the past 11 years. It's a great trip... lots of wildlife, beautiful scenery. Do it sometime - you won't regret it!
     
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  6. Tonyrodz

    Tonyrodz Full Access Member

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    I would love to, if I could. Few yrs ago me and a friend drove from Nj to LA(Calif)to drop off 2 Lambos--they were trailered. It was an awesome trip. I'd love to do it again. Screenshot_20180808-124843_Photos.jpg Screenshot_20180808-124854_Photos.jpg
     
  7. dmad1

    dmad1 Member

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    My '12 did the same thing. Dealer said it was normal. I was skeptic but the battery never ran down. My '17 does the same.
     

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