I am new to this forum. I just purchased my 1985 Accord Hatch MT today and i've had the AC on since i've been driving. When I don't use the air conditioning the car idles very low around 300rpm and shakes the same way you are in too high a gear on the road. When I have the AC on the rpms are naturally higher so I do not experience this issue. I just got the car and am anxious to fix the issue so any experience/ suggestions will help! thanks