Checked trans oil. The car tis an automatic. The car will shift into third, but rough. What can I do or what am I looking .
if your ck eng light is on scan codes and post so we can adv.you may also want to clean throttle body to see if that helps,could be all coked up inside
could be bad torque converter lock up solenoid but I would do what greg said and have it checked for codes
check proper atf level