Lupo, 1.0 ALL runs idle at approx. 2000-2500 rpm

Moin, had cleaned the throttle valve at mienem Lupo, because it went out at the traffic light or similar. Since the run it runs very unevenly at 20001/min. I already have another, uses throttle valve installed and learned, but no improvement. Error memory was also read out, but nothing in it. Hope one knows the problem and can help me.