What causes my car to jerk while I'm driving? on 2005 BMW 545i

It jerks every couple of seconds when I'm driving. It used to do this several months ago and then it stopped. Now, it's doing it again. Any help would be greatly appreciated. I'm constantly having to have repairs done to this car.

by in Columbia, SC on January 17, 2013
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1 answer
ANSWER by , January 17, 2013
could be misfire have codes scanned and post so we can adv