I have a 2010 Journey R/To with 108k miles. I recently had my journey in the shop to fix and EGR valve, and my computer wiring connectors. Everything was fine for about the past week or so and just today when I reach speeds of 55 miles per hour or higher my car started shaking. I tested it when it was in park and rev the engine and as soon as my RPMs got up to 3500 it started shaking again. Has anyone officially figured out with this issue might be with theirs?