My girlfriend has an 04 lancer with about 60k miles on it. It has a slight hesitation at speed, noticed it going to chicago this weekend. Just a standard ol base line lancer. Doubt it's every been tuned up, and the hesitation is very slight, but noticible, and not at any set time. Anyone experienced this? Probly just time for a good tuneup? Seems to be most noticable at steady throttle (cruising speed).