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Humming Noise

Discussion in '2nd Gen. Tacomas (2005-2015)' started by WYTaco, Apr 20, 2020.

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Apr 20, 2020 at 4:18 PM

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WYTaco [OP] New Member

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I am getting this humming noise from under the hood. It increases with the rpm’s. The best I could tell is it’s coming from the alternator. Does anyone know if that’s a sign of the alternator going bad? No electrical issues so far. I attached a video.

WYTaco, Apr 20, 2020

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Apr 20, 2020 at 4:52 PM

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Jimmyh Well-Known Member

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Sounds like an alternator whine to me. Have you gotten it excessively wet lately?

Jimmyh, Apr 20, 2020

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Apr 20, 2020 at 4:54 PM

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WYTaco [OP] New Member

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I haven’t gotten it wet other than normal winter driving.

WYTaco, Apr 20, 2020

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Apr 20, 2020 at 6:50 PM

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Jimmyh Well-Known Member

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Get a short section of hose and place one end at your ear and hold the other carefully by the alternator. You should be able to tell.

Jimmyh, Apr 20, 2020

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Apr 21, 2020 at 8:13 AM

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grizquad Well-Known Member

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Plasmaglow Firestorm lights, Westin Bull bar, Flyzeye interior console lights

Could be a pulley bearing starting to go bad, I would start with idler pulley.

grizquad, Apr 21, 2020

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