Shudder/Vibration Low speed turn, power

[Munkiebunz3]

I had this exact experience. The service advisor said that they replaced the front diff. They separated the ticket into two different ones with one for the power train warranty work & inenfir customer pay. I did not get the copy of the warranty work ro so I can't confirm. Looking under the truck did not reveal a new pumpkin.

 

[17LimitedExpy]

I had this exact experience. The service advisor said that they replaced the front diff. They separated the ticket into two different ones with one for the power train warranty work & inenfir customer pay. I did not get the copy of the warranty work ro so I can't confirm. Looking under the truck did not reveal a new pumpkin.

To confirm...you had the shudder/vibration in 2H mode only? When you selected 4A the shudder went away?

 

[Munkiebunz3]

I did have it in 2H. I did not check for 4A function. As long as I have a warranty & I'm not getting paid for my diagnosis, I don't feel like spending the time with the dealer that doesn't listen to me anyway. Here is a different story. I'm doing diagnostics when things go wrong so I can help people here.

 

[17LimitedExpy]

I did have it in 2H. I did not check for 4A function. As long as I have a warranty & I'm not getting paid for my diagnosis, I don't feel like spending the time with the dealer that doesn't listen to me anyway. Here is a different story. I'm doing diagnostics when things go wrong so I can help people here.

Since you didn’t get a copy of the warranty work, are you saying your invoice (which you paid for) is the replacement of the front diff? Odd they wouldn’t give you a copy of the warranty invoice.

 

[Munkiebunz3]

@17LimitedExpy the invoice I got was only the cp stuff I paid for with a note on my driveline complaint to "see ro#xxxxxx for resolution" and they never gave me that one.

 

[powerboatr]

mine does this when we back out of the driveway and turn sharp onto the road, its gravel, asphalt so i get a tire slip, jump, grab.
its the limited slip i would guess,
then add in my drive is 2" taller than the street and the front wheel is turned pretty sharp and it drops and creeks a bit, as it looses traction and then rolls across the gravel stuff.

 

[Munkiebunz3]

@powerboatr his happen in parking maneuvers so I doubt he's mashing the pedal to quickly merge with the parked cars & triggering the limited slip or traction control.

 

[powerboatr]

i may have not been clear, mine does it at backing out of the drive, which is slow. i get noise and groans as the wheels transit the three different traction of gravel, asphalt and concrete, plus a 2" height difference

 

[JExpedition07]

It sounds like the beginning of epas failure like Coolzzy said. The electric steering rack often inevitably has to be replaced. Pretty common failure if you look over at the F-150 forum, often around 100k miles.

 

[MyExpedition2016]

Finally got it back from the dealer and the rear end grinding is no more. They replaced the clutch pack in the rear differential. this is the limited slip components from what I've read and happens fairly often. Under warranty - $0!