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Old 07-17-2020, 12:36 PM #16
market525 market525 is offline
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Has anyone serviced the driveshaft? If it's a 4WD model, there must be 10-12 grease fittings as I think back on it. I'm guessing here ... but if you're not doing your own maintenance, I'm betting the DS is not getting lubricated ... even at a Toyota dealer. It's possible your 4R has never been greased ..... Probably a long shot, but worth mentioning I thought.
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Old 07-17-2020, 09:45 PM #17
Fenix84 Fenix84 is offline
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Quote:
Originally Posted by euser View Post
Wheel bearing or rear diff.
Did some searching and this sounds like my problem exactly. Wheel bearings

Help: Humming noise coming from front end while driving

Bringing it in on Monday and will report back.
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Old 07-20-2020, 03:49 PM #18
Fenix84 Fenix84 is offline
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So to close off this thread in case someone runs into this problem in the future.

I replaced the Front Driver Side wheel bearing, transmission/transfer case and differential fluid.

Symptoms:
Driving Straight - HUMMING SOUND
Left Turn - HUMMING SOUND
Right Turn - NO SOUND

When slowing down the car feels like its not downshifting and the humming gets louder.


Its possible the only problem i had was the wheel bearing but i do feel when slowing down the shifting feels smoother.

Thank you everyone for your help!
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