2004 Toyota Tacoma Front whistling noise during idle

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Noises problem
2004 Toyota Tacoma 6 cyl Four Wheel Drive Automatic 130000 miles

After a long road trip involving some 4-wheeling, I noticed my truck is making a whistling or high-pitched reeeee sound kind of like a really quiet dentist drill. It comes on about 15 seconds after I turn the truck on, is a steady high pitch at idle, drops down in pitch and then goes quiet when I accelerate, comes back when I'm coasting, and then stops initially when I brake and then starts, going up in pitch til its high pitch. The whistle happens whether I'm in any gear including neutral and whether or not I'm in 4wd. I can hear it as clearly inside the cab as I can outside the cab with the hood up, and it seems to be coming from the round transmission hub. Any specific ideas on the repair involved? I'm trying to decide whether I should attempt a fix myself or take it into a mechanic.

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have the same problem?
Tuesday, May 11th, 2010 AT 8:17 PM

1 Reply

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If by trans hub you mean the bellhousing (where it bolts to engine) then it may be a front pump or torque converter whining.I would have it looked at to see if that is th ecase, if so you will want to have it taken care of so as not to possibly damage the rest of the trans, if that is where the noise is coming from. You can try a trans service, maybe it is just a partially plugged filter.

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Thursday, May 13th, 2010 AT 8:26 AM

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