XC60 Auto - Jerky/kangaroo behaviour at low speeds

[Baffler]

Yours is the 4 cylinder VEA? Just curious if you slip it into Sport mode is it still doing it?

There may be other things going on here too, as yourself and others have eluded to, so would be wise to also check over the various intake and boost hoses/pipework and perhaps consider cleaning the EMAP sensor, its pipe and the Intake Manifold sensor.

I also discovered recently, whilst cleaning the EGR and cooler on mine, the plastic fresh air in pipe, the one that runs from the MAF sensor to the turbo, had separated at the join for the intake manifold breather. This would allow for a degree of unmetered air to be drawn in, as it's downstream of the MAF, and throw out actual and desired values. Just something to check over. I'll post up a seperate thread soon and include some pics.

In the meantime have a read of Tenuta's thread: Wow - changed auto gearbox oil and now like new. At time of service last year 31256775 plus 31256774 is what was used in mine.