Whirring and whining noise, 2007 tacoma, v6, ~120k miles - Toyota Nation Forum : Toyota Car and Truck Forums

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post #1 of 3 Old 04-20-2017, 10:27 PM Thread Starter
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Whirring and whining noise, 2007 tacoma, v6, ~120k miles

Cold weather brought with it some new sounds from my truck. It started out as an intermittent whirring noise, occasionally whiny, then it became more consistent, and is getting worse more quickly. I couldn't figure what it was by listening with the hood up, so, I brought it to my mechanic. They diagnosed it as a bad alternator (bad alternator bearings) and recommend replacement as well as a new belt. I'm going to call the dealer with my vin to SEE if I have the towing package tomorrow, but I don't see a tranny cooler. Will attempt the alternator install this weekend
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post #2 of 3 Old 04-20-2017, 11:38 PM
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Whirring and whining noise, 2007 tacoma, v6, ~120k miles

Easy way to check for towing package is to look for the oil cooler equipment. Just look for the unit with the two lines under the oil filter.


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post #3 of 3 Old Yesterday, 08:13 AM
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Also, could be one of the other bearings the belts wrap around. At least one of those is not a closed bearing that uses a rubber seal to keep out moisture but rather has a metal shield that frankly is not very water resistant. At the age and mileage of your rig its probably worth considering.
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