I had a tune-up on my car and when I got the car back it was making throbbing noise and jumping with my foot on the brake pedal. It started to stall out and then take off fast, and then after a day, the engine light came on. I took the car back and was told the problem was fixed. Light comes on again, I took it to a parts store and was told that the distributor was leaking oil and it was misfiring. They used a instrument that plugged into my car and it showed several codes. Distributor was replaced and spark plug that the code said was misfiring. The light is off, but car still jumps, when it is driving or idling at a stop.