2003 KIA SPECTRA User Comment / Complaint

I have an ongoing problem with my 2003 kia spectra, approx. 2 years ago i started having problems with the car shutting off while i was driving and while i came to a stop at the traffic light. i had the car towed to kia and they did a tune up and replaced a part that was supposedly the problem for the vehicle to shut off or to accelerate while at a traffic light. when this happens it takes all you can do to keep the car from lunging forward. also sometimes when you turn the air conditioner on it causes the car to accelerate while at a traffic light. the car could run great for days, but then it starts to do the same thing again. especially on hot days. i have been in some scary situations on very busy highways, where the car shuts down while driving , fortunately i was able to get to the side of the road. i have had my car to sts 3 times to try and figure out what is wrong with the vehicle and on those occasions they haven't been able to simulate. i have also replaced the low and high beam headlights approx 8 times. i've had both low beams go out at the same time.