Vibration/shaking at @1500 under boost.

Got a new 2009 WS last year (never sold, sat in Washington for a few years). Even when I left with it, the clutch pedal shook so bad under a load it was nuts.
They replaced the pedal thinking it was missing some padding etc.
I could then figure it out, and make it do it at will by getting over 20psi of boost, at the 1450-1600rpm range. Above or below that, not too bad.
Tranny was running warm today (100k lb load, I68 in Md), and got to 200f. The vibration etc seemed worse than normal.
It now shakes the gear shifter a little too, as well as the noises etc. Can hear what sounds like the engine note changing too when at that RPM (2009 S60).
It's been on the dyno, and actually shakes the engine when it does it due to the drive axle being chained down etc, Detroit had no idea. Been to various shops, all they do is check driveline angles etc.
I am heading out West to a very friendly WS dealer, and would like to tell them where to look etc.
Carrier bearing feels tight, and cannot see the driveshaft etc out of line when on the dyno.
Engine, clutch, trans, axles or?????

Martin

 

Under warranty, I shouldn't have too! Clutch pedal goes nuts, gear shifter shakes a little, and so on. Annoying to say the least....

Cheers
Martin

 

In my time of owning it..... It has had 13 injectors! One single one and 2 - 6 packs! Didn't change a thing, but Detroit likes injectors while under warranty I guess! Warranty started last June, so good for a few years yet

Martin

 

Did it on the computer, everything good according to that. Not a true test with a gauge, but with the computer hooked up and cranking the engine

 

Plug swap?