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I have a 05 Toyota tundra 2wd 4.7 iforce V8 doublecab, there's this noise that sounds like a worn belt(whining and squealing) but it doesn't make the noise when it's in park and I rev it. It makes noise while accelarating and gets louder when I press more gas.anyone have a clue As to what it might be?

Thanks in advance!
 

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It could be the serpentine belt and/or tensioner. How many miles are on the serp belt? I see you live in HI, so snow and salt is not a problem for early serp belt wear. Mine squeaks when it's cold or raining. I've read on TS that Goodyear Gatorbacks are good belts. Try 'dressing' the serp belt with a little brake fluid or WD-40 and see if that solves the noise issue. Do not saturate the belt with any fluid.
 
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