So I have a 2007 jeep compass and motor runs great, had and shakes in the motor/Trans area for a while. I replaced the spark plugs, air filter and the motor and trans mounts and it helped a little bit. But I'm still getting the shake while stopped in gear ( more so in drive then reverse) wondering what would be the next thing that I would need to look into to get rid of the shake. Also my car has a constant velocity transmission and I did do a service on it when I bought the car a year ago.
According to Rick's Free Auto Repair Advice - Vibration at idle – Jeep, this is a known issue. Chrysler issued a technical service bulletin (18-017-08 Rev A) which requires a software upgrade to resolve the issue.
Check with the dealer service center to see if this has been completed on your Compass.