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Old 06-28-2021, 06:16 PM #1
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Alternator life
My '04 V8 Sport went 183k before my alternator started to die, some internal part failed and it started to make a bunch of noise but it still lasted 380 miles back from camping before I got it fixed.

What do you think, decent lifespan?
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Old 06-28-2021, 07:42 PM #2
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Absolutely - mine usually last 100-125 k, but it depends on other factors as well
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Old 06-28-2021, 07:57 PM #3
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I would say so.
I've replaced several alternators but those were all on vehicles with under 100k miles on the odometer.
My '04 sport V8 has 154k miles on it and the original alternator is still going strong.
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Old 06-28-2021, 09:36 PM #4
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I’m at 180k on my ’04 V8 and the original alternator.
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Old 06-29-2021, 10:00 AM #5
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Alternator
I have an 03 V8 with the current mileage at 281k, the alternator went out at around 235k I just replaced it with OEM since it last that long.
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Old 06-29-2021, 12:49 PM #6
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509,000 mi on mine. Mostly highway miles. 08 V8 SE
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Old 06-29-2021, 03:05 PM #7
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Quote:
Originally Posted by randy88fj62 View Post
509,000 mi on mine. Mostly highway miles. 08 V8 SE

That thing is bullet proof! You take that long trip you had posted about already?


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Old 06-30-2021, 11:44 PM #8
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Mine went at 240,000 ish, 07 V6. Right after a several thousand mile road trip.
Which brings me to my next point, that alternator was on my mind for at least the last 75K miles but I thought it was cool to push it. See how long it would go.
This road trip included 100's of miles with no cell, no gas, no towns so if it had failed it would've been bad. The other vehicle on the trip (05 Tahoe) actually had the alternator fail but luckily we were already in Moab. Mine failed 2 weeks later at home which is a crazy coincidence.
My long winded point is yeah this isn't a service interval part but is it really worth pushing it? If my family had been with me and it did fail I can't imagine the drama with no cell signal in BFE.
Your mileage may vary
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Old 07-01-2021, 06:24 AM #9
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05' with original alternator, 180,400 miles.
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Old 07-01-2021, 04:47 PM #10
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Quote:
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That thing is bullet proof! You take that long trip you had posted about already?


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Old 07-01-2021, 05:22 PM #11
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I keep reading this thread title as 'alternator liiiyyyfe!'

I replaced my 4.7 Tundra's alternator around 210k, and it was the original part working just fine.
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Old 07-03-2021, 02:46 PM #12
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My ‘07 Sport just turned over 212K miles today and I’m still on my original alternator as far as I know. I bought the truck with 96K and don’t recall seeing a replacement listed in the Toyota service records.
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