I was driving my fiesta today when all of sudden my power steering locked up and my engine warning light came on. I managed to bring the car to a stop and turned off the ignition. I left it for 1 min then the car started first time with no engine warning light. Does anybody have any ideas what this could be as my manual says it could be a malfunction. A malfunction of what and is it safe to drive, especially with my children in the car?????