general problems of the 2006 Hyundai Santa Fe

This happens more often than none now. I can be pulling out into traffic of just crusing along when I press gas to go whenall of a sudden the car jerks, looses power! like its going to stop and stall in one quick second and throws me forward even with my seatbelt on it jerks me I only had it stall one time, so far. If I let off the gas and press it again it seems to help and power comes back, sometimes. I almost got hit pulling out into traffic because the car lost power and wasn't going anywhere when I had gas peddle pushed. When all this happens the engine light will come on and than go off, sometime now the engine light comes ons and stays on for a few days and the car has a lot less power or feels like its going to stall, than the light will go out on its own. I had it checked out and they told me I needed an alternator so I baught one when my son and my neighboor was going put it in they checked the alternaor and battery and they were fine and have been checked several times and are fine. Also at night when I press the break to stop or slow down the head lights will dim and I can feel the jerking of the care just a little bit. I am so afraid to drive this care sometimes or on the beltway because I am afraid its going to stall/shutdown or shut off that its going to get me killed and I am also afraid to drivge my grand children because of the same reasons. Please help me! I can't afford to keep getting it looked at when it doesn't happen all the time they can't find anything wrong with it. What can I do to fix this problem. When this happens I have no sterring or control of the car for that split second and I am an emt/firefighter I know that split second can kill me and anyone else in my car. I had baught the car used last year and it was doing it just a very little bit at first and I called the used dealer and he said its bad gas.

Tl- the contact owns a 2006 Hyundai Santa Fe. The contact stated that while driving at various speeds and making a right turn a squilling noise was present coming from the bottom of the vehicle and when turning in either direction the vehicle would experience a jumping type feel coming from the front of the vehicle. The vehicle was taken to an independent mechanic who discovered that the steering shaft was bent. The vehicle was repaired but the squilling continued to occur. In addition the contact indicated that the failure caused the front passenger side tire to deflate. The manufacturer was not notified of the problems. The failure mileage was 5,000 . Jft.