4 Cylinder / 2 dr / 2005 Pontiac, Sunfire (35000 miles). My car runs very smooth until I pick up speed on the highway at about 65mph. Has good take off speed and I've had regular oil changes. However, the car is two years old and has never had a tune up. Could that be the problem? I've never had this problem before. What could be wrong?
Thursday, February 15th, 2007 AT 10:40 AM