Hello guys I need your opinion.

I have a Fiat 500 1.3 multijet 75 cv, which is a bit of time, especially from cold when I change gear remains accelerated

then warming up the problem disappears.

I have cleaned the sensor of absolute pressure,the flow meter but the problem remains.

Diagnosis there are no errors and all the parameters seem ok.

what could be sensor,the clutch pedal?

Thanks to all for the advice.