Front end "pop"

[scott99eb]

Hey Ya'll,
I have a 99 Eddie Bauer 4wd (A4WD) 5.4 4R100. I had to use 4lo this afternoon and when I applied the gas the frontend started popping. No noise or vibration without the transfer case engaged. I have recently replaced both CV shafts, new ball joints, and new brakes.
All of the research I have done points to CV shafts, but they are new. Can someone point in the right direction for a troubleshooting procedure?
Thanks, Scott

 

[Am3ricanInfid3L]

Was it popping only when turning? Or was it a repetitive "pop" as soon as you engaged it?

 

[scott99eb]

It starts popping as soon as you press the gas pedal, it doesnt seem to matter which way the wheels are pointed.
Thanks, Scott

 

[scott99eb]

Found the result, not the cause: Passenger side axle tube is broken, in the area where the bolt flange is. Is there a written procedure here on how to replace the tube? Will have to investigate further as to why and how it broke.