CV axle

[Bob13]

1999 Expedition 4wd XLT 5.4.

Just started getting a loud clunk and vibration when tuning sharp (left or right) , as in going into a parking space. When going straight no noise or vibration. If I put into 4wd it does not clunk or vibrate. I almost never use 4wd, can’t remember last time I used it. Going forward or reverse or turning left or right makes no difference. Front CV axle??

 

[02Sexpedition]

Could be a number of things. Ball joints, cv, hub. You’ll need to jack it up and check it out. Likely upper control arm is shot imo

 

[Bob13]

As it turned out it was the transfer case motor. It was stuck in 4WD regardless of the switch position. How it engaged in the first place I have no idea.

 

[jr1under]

Thanks for posting your solution. It is annoying to respond to someone's question and not hear the outcome.