Wife was cming from work in the fwy and when she accelerated to pass a car her car kicked and started to slow down with the check engine light flashing as she slowed down the car started to shake really bad. She stoped at a gas station. When i went to pick up the car it started but was shaking bad i tried to drive it home and when i got to a block distance it kicked again and went back to normal. Its running fine now but the random misfire code is on. Any ideas what could of caused this? Thanks.