Drag on Drivetrain

Not sure how to describe this exactly but I hear & feel a drag on the drive train when on the street in 2wd. If I shift into 4wd the sound and the feel stop. Whatever it is seems to be getting worse. 4wd drive is working; I am speculating that maybe it's not fully disengaging out of 4wd. Anyone have any ideas, suggestions or similar experience? It's a 2006 dbl cab, 4L with TRD offroad package & 3" lift. Standard size tires & wheels, 66k miles.

Thanks
David

 

Engine operation is normal? Gas mileage normal? Engine/Transmission RPM/noise is normal??

My wife had a noise - No real feel to it but it was the front wheel bearing. Have you check them???

 

Near as I can tell gas mileage is normal at least it's not Wheel bearings feel fine.

The best way I can describe the sound is it's like a low pitch growl and I feel it through the drive train as well. It seems to completely go away when I shift into 4WD

I am admittedly pretty ignorant on the Tacoma 4WD system. I am not sure if the front axles are turning the differential & drive shaft all the time and only the xfr cases disengages or if there's a point of disengagement at the wheels as well. Wherever the 4WD disengages, I have a strong hunch it is not completely doing so.

Thanks for your response.

 

Sorry left out some words; should have read "at least gas mileage is not down by much it any"

 

It's your front diff bearing. Very common on our trucks after lifting them. In fact there's an entire thread on it.


http://www.tacomaworld.com/forum/2n...nt-differential-bearing-vibration-thread.html

 

Thank you! That describes it just about exactly. Now I know where to look.