When I start to turn by steering wheel when I am completely stopped or just start to move, something pops in the steering. I felt all of the steering connections underneath and everything seems to be tight. I just can't seem to find where it is coming from. Any ideas?

My truck is a 1997 F150XLT Flareside Regular cab with about 88k miles

 

Better check the connection on the sterring shaft...heard that a lot of problems have occurred here..I also think a TSB is out on this too