Hello, I had the Head Gasket replaced on my 2010 Aveo 5 Lt at 63,000 miles. The timing belt was also replaced at this visit to my mechanic. It has been a few days since it was serviced and I noticed the RPMs fluctuating while I'm driving and the car is surging while driving. I just spent a couple Thousand on my car and am hesitant to spend more, but will cause I love my car and want to drive it as long as I can. A day before I noticed the surging and fluctuating RPM's I was pulling out of a parking lot and it died. I coasted to curb and restarted it? I brought it back to shop and of course it ran without any hiccups?
Any ideas? I was thinking throttle body? Thank you for your feedback.