While driving typically at higher speeds 60-70mph every once in a while maybe every 1/2 mile or mile the car has a slight subtle jerking sensation. However, when I put the cruise control on you cant notice or feel the jerking anymore. No check engine light comes on. Occasionally the ECO light will skip on but only sometimes can I correlate the two happening simultaneously. I have searched the chats and cant seem to find this issue anywhere. Any help?