Hello,
What exactly gets really bad when you put it in gear or A/C is on? Are you getting a shake or something. The A/C probably would show an effect if the problem was a motor mount but the motor may shake a bit more if you have a misfire going on. Is it possible for you to upload a video of what you are talking about. Take the video with the condition before and after the A/C being turned on. Is your engine light on? if so, get it scanned and let us know what if any codes are stored in there.
Tom
Oct 14, 2020 at 3:28 PM