Hello
I have a 2004 F150 Supercrew 4 x 4 with 127,000 kms.
When I turn corners from a stop position and then accelerate the truck feels like the 4 wheel drive has either engaged or that I may have some slippage in the transmission. The transmission fluid is full with no sign of it burning.
Any ideas as to what may be happening ....is much appreciated.
Thx
MFC

 

The 04 diffs are well know for this... Do you have a limited slip or open? These clutch packs are poorly designed for longevity. And also, do you have an 8.8 or 9.5 rear axle?

 

Change rear fluid... Add friction modifier

 

My 2010 is doing the same thing, only 26K. Dealer replaced fluid added friction modifier. Took away some of the vibration, but still there