Hello, since recently my empty run jumps between 1050-1250 and when I turn it off and turn it on again it goes back to its 850 umführungen in the empty run. Could it be the idle control or something else? My wedgeriem of the alternator quick for a few days and the volt indicator fluctuates when it squishes under 11 volts and then from 2000 rpm stops the squeaking and shows again 13 volts. Do the idle swings have to do with the wedgeriem? Thanks and greetings