Headlights problems of the 2003 Kia Motor Spectra

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.

Have replaced both high & low headlights 3 times each. Heater is not working. Junction box needs replaced 12/15/05. Car is a 2003 kia Spectra with 97,500 miles on it. It was bought new.

Purchased the car in may of 2003, June 30th of 2003 check engine light came on and had to have the tps replaced and 3 more times to present. Have had multiple headlights replaced, heating problem, exhaust replaced. Car is now on 46,000 had transmission replaced (through an att. From lemon law) at 16,000 miles had to have tires replaced. And, now to date tires were replaced for the 5th time, brakes were done 4 times, now to find out the reason tires and brakes were needed to be replaced so many times is because the suspension is way out of alignment which seeing I have had the problem all along I now believe it was a defect all along.