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2011 Sonata Engine Stalls When Sitting at Traffic Light
My Sonata was purchased in March 2010. Within one month, the engine stalled when braking to a full stop at traffic light. I took my car to the dealership. They couldn't reproduce the problem and just refreshed the computer software. A little over one month later, my car cut off again while sitting at traffic light. Maybe another one or two months later, it happened the third time. I had my car towed to the dealer that time. They kept it for two weeks but still had no clue. Weeks later I did the first oil change which seemed to help a bit. No stalling occurred after the first oil change and another oil change. Until recently the problem came back again. One day, when it sat at traffic light, the car shook a little like someone hit me. I looked around and no car was close to mine. The other day, this hit-like shake happened again while at traffic light. This time, the car even shook several times during driving after leaving that traffic light, with the check engine light blinking in accordance with the shake. Yesterday, my car finally stalled again at a traffic light.
Except the first one, all other occurrences happened while the car sat at traffic light and I stepped on the brake pedal. After I restarted the car, it could run smoothly for at least one month. I even bought a cam to record the dash while driving. Since the problem seemed gone away after oil change, I stopped recording long time ago.
Given the occurrence frequency, the chance to reproduce the problem at dealership is close to zero. And they refused to lend me their computer that could hook up in car to record driving data. I had also contacted Hyundai Customer Affairs before. All they can do was just send me to the dealer and close the ticket. Any suggestions, folks? This is really disappointing and embarrassing when cars behind me watch me restart a Sonata new model.