2010 MKS no turbo power/negative boost

[SHOdded]

Could be a failing motor mount/trans mount.  The "shake" should be evident on both hard launches and sharp decelerations w/o brake pedal input.  Check to see if there is any oily film on them.  Also check the subframe bushings for play/rot.

 

[pmezo33]

Assuming it is the turbo, and i have no clue if it is or isn't, you might want to check to see if that part's covered under the powertrain warranty.  The MKS has a 70k /6 year powertrain warranty, so you might be covered.  How many miles do you have on the car? 

Just something to consider.

 

[salsathe4th]

870,000 btw i still need to change the plugs, ptu, and rdu fluid. If any of those can be the reason

 

[nickstewartroc]

Did an extra 0 hop in there or are you almost 1 million miles?

 

[salsathe4th]

Did an extra 0 hop in there or are you almost 1 million miles?

87,000* this ain't no diesel

 

[SHOdded]

I would say that having someone look over the MKS in person is a good idea at this point.  Rule out the turbo piping, trans fluid, PTU fluid, etc.  Would not hesitate to take glock up on his offer ...