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Discussion Starter · #1 ·
Recently got a speed dependent knock when I engaged 4wd. Originally it went away when 2wd was engaged. Now, it will continue knocking in 2wd after being in 4wd. Sound continues if I shutoff the engine while moving down the road in neutral. If I start in 2wd ( in the morning), there is no knocking until I engage 4wd. Sound seems to be in front of drivers seat.

Thoughts?
 

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IIRC the front drive shaft rotates all the time whether you are in 2WD or 4WD. I would suggest checking the front DS for slop at the t-case u joint.
 
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