Can anyone help me diagnose this issue I'm having? I just got a 2010 STX 4.6 2v 4x4 with the 4r75 tranny. Upon takeoff it's shuddering while turning, once the wheels are straight no shudder, it feels like I'm going over rumble strips in fist gear. Slip yoke, torque converter, bump slip, u-joints ??? Any help will be greatly appreciated!

 

Here's a suggestion.

Get under and go look.

 

Why say anything if your gonna be a little bitch?

 

Do you have a limited slip rear axle? If so, has the fluid been changed lately with the recommended friction modifier additive? You describe symptoms that point to that.

 

LOL. While driving?

Sounds like a 4x4 or steering problem. All those rear driveshaft points you mentioned don't change with steering, really.

 

Does it do it turning left and right or just one or the other?