Originally Posted by jdetzel
With the A/C on mine idles very smooth. Turn off the A/C, the RPMs drop a little and I get a vibration. Not bad but noticeably different. It doesn't seem the be a problem but it is a little annoying. The next time I am at the dealer I thought I might ask if the idle could be adjusted.
I haven't noticed a difference in idle between a/c on and a/c off at idle with a foot on the brake, but idling in park with the foot off the brake seems to be about 680 rpm target idle with the DCT at least vs the 750 with the foot on the brake with or without the a/c on.