Weird Sound

[Rishi3]

So today I got me a 2007 Sport V6. However, on the way home I noticed that between 5-15 mph when I lightly tap the throttle, there is a weird almost grinding/ knocking sound, but goes away after I pass 20 mph. Anyone know what that may be?

 

[ExCabSwap]

Could be a u joint

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[Rishi3]

Also the sound isn't present when I am in 4wd

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[ExCabSwap]

Cycle between 4low and 2wd a few times.. careful not to move while the light is blinking.. may be a solenoid issue

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[DEF4Runner]

If it goes away in 4wd, it very well could be the front differential pinion bearing.

 

[Rishi3]

Nevermind, it is also there in 4wd. Just heard it last night

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