Drive train issues

[alancovell]

I've got a 2011, several months ago it started making a whining type of sound that I was pretty sure were the cv axles going bad. It's got a bit over 86k on it.
One night on the way home from work there was a very distinct pop that sounded like metal cracking. The car almost locked up. It makes a really loud popping sound, I replaced both front cv axles and bearing hubs. The problem is persistent. I'm at a loss as to what to do next, if anyone has any ideas I'm open to suggestions

 

[FREAK_SHO]

Fairly certain the PTU ate itself. Start at the link below for alot of info and part numbers for replacement.

Yet another PTU thread...some history

Lot's of talk recently about the PTU. It is definitely a frequently referenced component and has been known to be the cause of many failures. Wanted to provide some insight to the history of the PTU and some info on the various iterations of the years. Essentially, there are really only 2 PTUs...

shoforum.com

 

[Johnsho2016]

I've got a 2011, several months ago it started making a whining type of sound that I was pretty sure were the cv axles going bad. It's got a bit over 86k on it.
One night on the way home from work there was a very distinct pop that sounded like metal cracking. The car almost locked up. It makes a really loud popping sound, I replaced both front cv axles and bearing hubs. The problem is persistent. I'm at a loss as to what to do next, if anyone has any ideas I'm open to suggestions

PTO for sure

 

[Johnsho2016]

PTO should have its own thread.

 

[kryptto]

PTO should have its own thread.

I does all over the place:

Yet another PTU thread...some history

Lot's of talk recently about the PTU. It is definitely a frequently referenced component and has been known to be the cause of many failures. Wanted to provide some insight to the history of the PTU and some info on the various iterations of the years. Essentially, there are really only 2 PTUs...

shoforum.com

Also

The Guide to Understanding the History of the Ecoboost Power Transfer Unit [Study]

Lot’s of talk recently about the Ford Power Transfer Unit (PTU). It is definitely a frequently referenced component and has been known to be prone to many failures. Below is very interesting video I was turned onto by a member of the SHO forum a few weeks ago. It’s not Ford-specific but does a...

www.fortheworkshop.com