2.0 CVT starts 'jumping' at certain speeds

[The Norwegian]

Hi all,

My engine sounds a little rough, especially when it's cold out. There has been some suspicion that the gearbox is a bit worn out, it occasionally slips a tiny bit, and it feels a bit like it's not completely happy when pulling off from cold start or up a steep hill.
The worst problem I have is when the engine is good and warm, driving on the highway, doing about 60mph, just keeping the speed steady, then start driving uphill. It will almost every time start jumping around, and it won't stop until I either give some more throttle or slow down. You can feel it in the whole car and it's very uncomfortable. It's happened before but it has become much worse the last months. Any idea what it can be? I am maybe guessing that it happens in those situations because the transmission requests a wider throttle when going uphill in order to compensate for the speed loss. Accelerating with high engine load, but low RPM seems to provoke it.

I'm thinking vacuum, coils, plugs, or something with the gearbox?

[a4cvt]

Have you renewed the gearbox fluid. If the fluid is old it can have a big effect on the way the box operates. If it has not been changed for a long while it may need doing twice. I had a juddering at low speed pull away and once the fluid had been changed the judder slowly went away.