Hi all,

Only when driving above 75 mph occurs.
I did a little experiment, and at 75mph I pressed the gas just a bit, then I saw the rpm went high which means it downshifted but it was very very smootly, almost fell it. But then (after 1-2 seconds) I push the gas harder and it will downshift again (into the third gear) and this time quite hard, like a bad transmition.

At 75mph rpm is as below:
5'th gear - 3100
4'th gear - 3500
3'th gear - 3900 (this is the faulty gear at downshifting)

Thanks.

Catalin