Thanks for the reply tw0wheelin. You may be right. The noise is very prevalent when making turns or rather putting lateral forces on the drive shafts. I assume a certain amount of force (side as well as rotational loading) is pushed back up through the CV joints. The half shafts are reasonable enough to repair and I have done it on other vehicles. The outer CV joints are easy to diagnose but inner ones are so close to everything major in driveline, it is hard to dtermine root cause. I forgot to mention that when up on jack stands and well blocked for safety, after putting car in drive no abnormal noise is heard in drive train even when pushing 'speed' up through 100 KPH. It would appear real drive forces are required to force the issue.
The question is how does one tell. I suspect that I need to take it in to Ford to tell me. How did you determine is was inner CV joint?
